FRANK Solutions for Class 9 Maths Chapter 6 - Changing the subject of a formula

Revise chapter-based problems and solutions with Frank Solutions for ICSE Class 9 Mathematics Chapter 6 Changing the subject of a formula. Practise the answers for textbook problems to learn how to use a formula to calculate answers. Understand how to use a formula to express a relation given in the questions.

Learn to express given data in the form of a formula using variables with Frank textbook solutions. To quickly revisit the chapter concepts, explore our ICSE Class 9 Maths video lessons. For boosting your exam confidence, solve the variety of problems in our sample question papers.

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Chapter 6 - Framing of Formulae Exercise Ex. 6.1

Question 1

The simple interest on a sum of money is the product of the sum of money, the number of years and the rate percentage. Write the formula to find the simple interest on Rs A for T years at R% per annum.

Solution 1

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 2

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 2

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 3

The fahrenheit temperature, F is 32 more than nine -fifths of the centigrade temperature C. Express this relation by a formula.

Solution 3

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 4

The arithmetic mean M of the five numbers a, b, c, d, e is equal to their sum divided by the number of quantities. Express it as a formula.

Solution 4

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 5

Make a formula for the statement :"The reciprocal of focal length f is equal to the sum of reciprocals of the object distance u and the image distance v."

Solution 5

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 6

Make a formula for the statement:"The number of diagonals, d, that can be drawn from one vertex of an n sided polygon to all the other vertices is equal to the number of sides of the polygon less 3"

Solution 6

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 7

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 7

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 8

A man bought 25a articles at 30p paisa each and sold them at 20q paisa each. Find his profit in rupees.

Solution 8

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 9

How many minutes are there in x hours, y minutes and z seconds.

Solution 9

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 10

Apple cost x rupees per dozen and mangoes cost y rupees per score. Write a formula to find the total cost C in rupees of 20 apples and 30 mangoes.

Solution 10

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Chapter 6 - Framing of Formulae Exercise Ex. 6.2

Question 1

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 1

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 2

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 2

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 3

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 3

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 4

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 4

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 5

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 5

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 6

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 6

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 7

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 7

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 8

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 8

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 9

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 9

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 10

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 10

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 11

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 11

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 12

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 12

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 13

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 13

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 14

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 14

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 15

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 15

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 16

Given: mx + ny = p and y = ax + b. Find x in terms of m, n, p, a and b.

Solution 16

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 17

If A =  pr2 and C = 2pr, then express r in terms of A and C.

Solution 17

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 18

If V = pr2h and S = 2pr2 + 2prh, then express V in terms of S, p and r.

Solution 18

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 19

If 3ax + 2b2 = 3bx + 2a2, then express x in terms of a and b. Also, express the result in the simplest form.

Solution 19

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 20

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula 

Solution 20

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Chapter 6 - Changing the subject of a formula Exercise Ex. 6.3

Question 1

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 1

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 2

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 2

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 3

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 3

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 4

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 4

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 5

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 5

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 6

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 6

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 7

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 7

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 8

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 8

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 9

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 9

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 10

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 10

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 11

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 11

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 12

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 12

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 13

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 13

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 14

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 14

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 15

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 15

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 16

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 16

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 17

The pressure P and volume V of a gas are connected by the formula PV = C; where C is a constant.

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula 

Solution 17

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 18(a)

The total energy E possess by a body of Mass 'm', moving with a velocity 'v' at a height 'h' is given by:

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Make 'm' the subject of formula.

Solution 18(a)

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 18(b)

The total energy E possess by a body of Mass 'm', moving with a velocity 'v' at a height 'h' is given by:

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Find m, if v = 2, g = 10, h = 5 and E = 104.

Solution 18(b)

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 19

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula 

Solution 19

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Question 20

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula

Solution 20

Frank Solutions Icse Class 9 Mathematics Chapter - Changing The Subject Of A Formula