Question

If a certain sum of money amount to rs. 6400 in 7.5 years and rs. 8000 in 15 years at a certain rate of interset compounded annulally. find the principal answer

Answer 1

Answer:

Simple interest is based on the principal amount of a loan or deposit, while compound ... The interest on a certain deposit at 4.5% p.a. is Rs. 405 in one year. ... If the total amount of simple interest earned in two years was Rs.3508, what was ... 15. If the simple interest on a sum of money for 2 years at 5% per annum is Rs.50

Step-by-step explanation:

Answer 2

Step-by-step explanation:

6400 become 8000 in 7.5 y

it means 4 become 5 in 7.5 y.

Now the same process happens in first 7.5 year the principal amount become 6400 in 7.5 year now the value of 5 is 6400 it means the value of 1- 6400/5=1280 and now the value of 4 is 1280×4= 5120