Question

the difference between simple intrest and componu intrest on a certain sum if money for 2 years at 4% per annum is ₹20.find the sum

Answer 1

Solution

Let the sum be Rs.x. then S.I.=(x*10*3 / 100) = 3x/10
C.I = [x(1+10/100)^3 -x] = 331x/1000
331x/1000 - 3x/10 = 46.50 
=> 31x/1000 = 46.50 
=> x = 1500

it is an example