Question

How long will it take for an amount to become 5 times of itself at 20% per annum simple intererst?

Answer 1

Answer:

5/4 years

Step-by-step explanation:

Let the sum be Rs x .

So, Amount = Rs 5x .

Let after t years, the sum will become 5 times of itself .

Rate = 20 % p.a.

So, SI = Rs 5x- x = Rs 4x .

Required time = 100 × SI / P × R = (100 × 4x/ x × 20 ) yr

                        = 5/4 years .

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