Question

I'm what time will a sum of money lent at 25/3% simple interest become 4 times of itself

Answer 1

Answer:

In 36 years a  sum of money leant at $\frac{25}{3} %$% simple interest becomes 4 times of itself.

Step-by-step explanation:

The rate of interest in the sum is $\frac{25}{3}$%

Let us consider the sum of money which is the principal as P, the amount as given in the question is 4P.

The amount after calculating simple interest is given by:

amount=S.I+principal

S.I=amount-principal=4P-P=3P

Let the time for which the simple interest is calculated be T years.

The formula for calculating simple interest is:

$S.I=\frac{PTR}{100} \\3P=\frac{25PT}{3.100} \\3=\frac{T}{3.4} \\T=3.3.4=36$

Thus the time in which a sum of money lent at 25/3% interest become 4 times of itself is 36years.