Question

In what time will the simple interest be 2/5 of the principal at 8 percent per annum?

Answer 1

A/q
2x= 5x ×8× t/ 100
t= 200/40=5year

Answer 2

Answer:

In 5 years  the simple interest be  $\frac{2}{5}$ of the principal at 8 percent per annum .

Step-by-step explanation:

Formula

$Simple\ interest = \frac{Principle\times Rate\times Time}{100}$

As given

Simple interest be $\frac{2}{5}$ of the principal at 8 percent per annum .

$Simple\ interest = \frac{2P}{5}$

Rate = 8%

Putting all the values in the formula

$\frac{2P}{5}= \frac{P\times 8\times Time }{100}$

$Time = \frac{2P\times 100}{5\times 8P}$

$Time = \frac{200P}{40P}$

Time = 5 years

Therefore in 5 years  the simple interest be  $\frac{2}{5}$ of the principal at 8 percent per annum .