Ask a Doubt
Request a call back

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

ICSE Class 7 Answered

A sum amounts to Rs 1326 in 6 years at 5% p.a. simple interest. In what time will this sum double itself at the same rate of interest?
Asked by bubu64272 | 30 Dec, 2018, 10:50: PM
answered-by-expert Expert Answer
Let the sum be Rs. x.
A = Rs. 1326, n = 6 years, r = 5% p.a. 
 
A = P + SI
1326 = x + x × 6 × 5/100
x + 0.3x = 1326
1.3x = 1326
x = 1020
Hence, the sum invested is Rs. 1020.
According to the question,
P = Rs. 1020 and A = Rs. 2 × 1020 = Rs. 2040
A = P + SI
2040 = 1020 + 1020 × n × 5/100
We get n = 20 years
 
In 20 years time the sum will be double at the same rate of interest.
Answered by Sneha shidid | 31 Dec, 2018, 09:57: AM

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
ICSE 7 - Maths
Find the sum which will amount to ₹700 in 5years at 8% p.a.
Asked by seemarani7444 | 15 Oct, 2023, 04:14: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 7 - Maths
find the simple interest on rupees 2525 for 3 years the rate of 1 Paisa per rupee per month
Asked by msitar158 | 09 Jan, 2023, 06:08: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 7 - Maths
a certain sum of money will amount to rupees 10000 at the rate of 8% per annum simple interest at the end of 5 years. find the money.
Asked by anikbaviskar79.7spicertl | 28 Oct, 2020, 07:56: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 7 - Maths
Kanwar donates ₹5000 to a school, the interest on which is to be used for awarding 5 scholarships of equal amount every year. If the donator earns an Interest of 10% per annum, find the value of each scholarship
Asked by jabezlibni37.7spicertl | 28 Oct, 2020, 07:17: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 7 - Maths
1.₹ 8400 for 4 year at 8% per annum
Asked by aayushsinghrajput1506.7sdatl | 06 May, 2020, 05:59: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 7 - Maths
In what time would rs256 increase to established 289 at 25/4 % p.a C.i
Asked by narani.saritha1 | 21 Nov, 2019, 06:39: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 7 - Maths
At what rate per annum will RS 8000 amount to 1000 in 2years?
Asked by anirbanhalder87 | 16 Oct, 2019, 08:37: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 7 - Maths
A man borrows rupees 4500 at 8% per annum S.I. on 7th January 1997 .He paid back the entire principal through with interest on 14th August 1997 how much money did he pay
Asked by aryaakhil | 22 Sep, 2019, 08:57: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 7 - Maths
A sum amounts to Rs 1326 in 6 years at 5% p.a. simple interest. In what time will this sum double itself at the same rate of interest?
Asked by bubu64272 | 30 Dec, 2018, 10:50: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 7 - Maths
In what time will the interest on Rs 6000 become Rs 1200at the rate of 5% per annum
Asked by yashwanthyash535 | 17 Dec, 2018, 08:18: PM
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
×