in what time will Rs. 5120 amount to Rs 7290 at a  12 1/2 % per annum , compounded annually

Asked by sayantikasingh3318.9sdatl | 24th May, 2020, 09:04: AM

Expert Answer:

Let the time be n years
Amount = Rs. 7290, Principal = 5120 and Rate = 12%
W e space k n o w space t h a t
A equals P open parentheses 1 plus r over 100 close parentheses to the power of n
rightwards double arrow 7290 equals 5120 open parentheses 1 plus fraction numerator 25 over denominator 2 cross times 100 end fraction close parentheses to the power of n
rightwards double arrow 729 over 512 equals open parentheses 9 over 8 close parentheses to the power of n
rightwards double arrow open parentheses 9 over 8 close parentheses cubed equals open parentheses 9 over 8 close parentheses to the power of n
rightwards double arrow n equals 3

Answered by Renu Varma | 24th May, 2020, 01:02: PM