Question

A sum of money doubles in eight years . Find the rate of interest

Answer 1

Answer:

Then, We get interest of 8years is 12. 5%

I HOPE THIS WILL HELP U

Answer 2

Answer:

=> Let the sum of money that's principal be x. Time = 8 years

=> Amount after 8 years becomes double = 2x Therefore,

=> Simple interest = Amount - principal = 2x - x = x

=> Rate per annum = S.I × 100 / P × T = x × 100 / x × 8

=> 100/8 = 25/2 = 12.5%

We get interest of 8 years is 12.5%

I hope this will help you dear..

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