Question

In what time will a sum of money lent at 25÷3 simple interest become 4 times of itself

Answer 1

In 36 years the sum will become 4 times of itself.

Step-by-step explanation:

Let the sum of money is Rs. P and time is t years

Given that, rate of interest = 25/3 %

Then interest in t years be

= Rs. (P * t * 25/3)/100

= Rs. Pt/12

So the amount after t years will become

= Rs. (P + Pt/12)

= Rs. P (12 + t)/12

By the given condition,

P (12 + t)/12 = 4P

or, (12 + t)/12 = 4

or, 12 + t = 48

or, t = 36

Therefore in 36 years, the sum will become 4 times of itself.

Answer 2

Answer:

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