Question

Simple interest on a sum of money at the end of 5 years is of the sum itself. Find the rate per cent p.a.​

Answer 1

Answer:

20 %

Step-by-step explanation:

Let the sum be Rs x

Rate r%

time = 5 years

SI = x×r×5/100

x = 5xr/100

x = xr/20

20x = xr

xr = 20x

r = 20x/x

r = 20

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