Question

A sum of money is doubled in 5 years. When
is its annual rate of interest ?
(A) 20% (B) 10% (C) 5% (D125%​

Answer 1

Answer:

time = 5 years

let sum( p)is ₹ x and amount is 2x

then, S.I= 2x-x = x

and,

rate= 100×si

p× t

= 100× x. (x÷x=0)

x×5

= 100÷5

= 20 % answer

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