CBSE Class 8 Answered
if the compound interest on a sum for 2 years at 12 1/2% per annum is rs 510 the simple interest on the same sum at the same rate for same period of time is
Asked by nimeetdhir149 | 08 Feb, 2019, 16:01: PM
Here, n = 2 years , r = 12
% = 12. 5% and Compound Interest = Rs. 510
![begin mathsize 16px style 1 half end style](https://images.topperlearning.com/topper/tinymce/cache/829a11d29f734b97b69a249f16a9c8f6.png)
We know that, Compound Interest = A - P
![begin mathsize 16px style 510 equals straight P open parentheses 1 plus space straight r over 100 close parentheses to the power of straight n space minus space straight P
space space space space space space space equals straight P open square brackets open parentheses 1 plus space straight r over 100 close parentheses to the power of straight n minus space 1 close square brackets
space space space space space space space equals straight P open square brackets open parentheses 1 plus space fraction numerator 12.5 over denominator 100 end fraction close parentheses squared minus space 1 close square brackets
space space space space space space space equals straight P open square brackets open parentheses fraction numerator 112.5 over denominator 100 end fraction close parentheses squared minus space 1 close square brackets
510 equals straight P cross times 0.265625
rightwards double arrow straight P space equals space fraction numerator 510 over denominator 0.265625 end fraction equals Rs. space 1920 end style](https://images.topperlearning.com/topper/tinymce/cache/724b87d865fd5fcb061cca71fc94bfa0.png)
P = 1920 , n = 2 and r = 12. 5%
![begin mathsize 16px style Simple space Interes space equals space fraction numerator straight P space cross times space straight r space cross times straight n over denominator 100 end fraction space equals space fraction numerator 1920 space cross times 12.5 space cross times 2 over denominator 100 end fraction equals space Rs. space 480 end style](https://images.topperlearning.com/topper/tinymce/cache/ee619067b8fae39e845cc966b0a1affd.png)
Answered by Yasmeen Khan | 08 Feb, 2019, 17:08: PM
Application Videos
Concept Videos
CBSE 8 - Maths
Asked by tanishasolanki | 20 Jul, 2024, 18:54: PM
CBSE 8 - Maths
Asked by bshreepranav | 19 Jul, 2024, 21:01: PM
CBSE 8 - Maths
Asked by chaudharyjugmendra | 16 Jul, 2024, 21:11: PM
CBSE 8 - Maths
Asked by sucharithavalluru | 16 Jul, 2024, 09:15: AM
CBSE 8 - Maths
Asked by sarojghardegharde | 15 Jul, 2024, 16:19: PM
CBSE 8 - Maths
Asked by amishsheikh95 | 12 Jul, 2024, 20:00: PM
CBSE 8 - Maths
Asked by uvaisuvaisuvais777888666 | 10 Jul, 2024, 21:22: PM
CBSE 8 - Maths
Asked by chinnamsettyvishnuvishnu | 10 Jul, 2024, 19:53: PM