Question

find the time in which a sum of money gets doubled at the interest rate of 8per cent per annum​

Answer 1

Answer:

Let the sum of money be x

Amount=2x

SI= Amount - Principle

SI=2x-x

SI=x

Time=SI*100/P*R

=x*100/x*8

=100/8 years

=25/2 years

=12 years 1 month

Hope it helps you!!!

Answer 2

Answer:

12.5 years means 12 years and 6 months.

Step-by-step explanation:

let's assume the sum of money be100. So

SI should be 100 for the amount to be doubled.

Interest= p×r×t/100

100 = 100×8×t/100

time = 12.5 years

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