Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 10 Answered

A motor boat whose speed is 24 km/hr in still water takes 1 hr more to go 32 km upstream than to return downstream to same spot. Find speed of stream.
Asked by adalroshan2464 | 10 May, 2019, 10:30: AM
answered-by-expert Expert Answer
speed space of space boat space equals space 24 km divided by hr speed space of space stream space equals space straight x space km divided by hr upstream space journey time space equals space fraction numerator 32 over denominator 24 minus straight x end fraction space hrs down space stream time equals fraction numerator 32 over denominator 24 plus straight x end fraction space hrs difference space equals 1 1 equals fraction numerator 32 over denominator 24 minus straight x end fraction minus fraction numerator 32 over denominator 24 plus straight x end fraction 1 over 32 equals fraction numerator 1 over denominator 24 minus straight x end fraction minus fraction numerator 1 over denominator 24 plus straight x end fraction 1 over 32 equals fraction numerator 24 plus straight x minus 24 plus straight x over denominator 24 squared minus straight x squared end fraction 24 squared minus straight x squared equals 64 straight x straight x squared plus 64 straight x minus 576 equals 0 straight x equals 8 space or space straight x equals negative 72 speed space can apostrophe straight t space be space negative speed space of space stream space equals space 8 space km divided by hr
Answered by Arun | 10 May, 2019, 10:49: AM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 10 - Maths
Present age of 'A' is 4 years less than that of 'B'. Age of 'C', 4 years hence from now will be 60% more than the age of 'B', 4 years ago from now. Find the present average age of 'A' and 'B' together if the sum of present age of 'A' and 'C' is 48 years.
Asked by jhajuhi19 | 01 Feb, 2024, 08:43: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
Data given below is related to daily routine [study time (in hours), entertainment time (in hours) and rest time (in hours)] of three students A, B and C.    Daily routine (24 hours) = Study time + Entertainment time + Rest time   A's study time is 1 hour less than B's study time and A's rest time is 7 hours more than his entertainment time. Ratio of A's entertainment time to B's entertainment time is 1: 2. Average of study time of A, B and C is 6 hours. Average of rest time of A and B is 9 hours. Ratio of C's entertainment time to his rest time is 4: 3.   If B's study and entertainment time is m% more than C's study and entertainment time together, then find that B's study and entertainment time together is what percent more than A's study and entertainment time together?
question image
Asked by jhajuhi19 | 31 Jan, 2024, 11:21: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
the numerator of fractions is 4 less than the denominator. if the numerator is decreased by 2 and the denominator is increased by 1 , then the denominator is 8 times the numerator. find the fraction.
Asked by am.mansi628 | 29 Nov, 2023, 05:38: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
solve this
question image
Asked by simmysingh1aug | 21 Sep, 2023, 01:48: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
M alone a work comppet in 50 days the same work N complet in 100 days then they both are complet 25 days then what percent work the total work will be completed
question image
Asked by bhaveskumar9938 | 08 Jul, 2023, 05:40: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
maths
question image
Asked by krishpatel20108 | 01 Jan, 2023, 07:56: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
worksheet 1 question 1
question image
Asked by bhawnabansal47809 | 01 Jun, 2022, 07:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
exceeds it's bredth by 3m
Asked by preetijain4723 | 27 Apr, 2022, 09:48: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
pls solve this math doubt
question image
Asked by dhruvdilipschool | 07 Mar, 2022, 11:37: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
A and B together can do a piece of work in n days while B alone can finish in it m days.work done by A in 1 days is   
Asked by Senorita | 30 Dec, 2021, 11:23: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×