Question

Girish invested some money in a bank. After eight years his amount become triple. How many times of the original sum will the money becomes in $20$ years at simple Inerest?

• A. $5times$
• B. $6times$
• C. $7times$
• D. $8times$

Answer 1

The correct option is A $5times$

Let he invested $x$ RS at $y\%$

After $8$ years

$3x=x+8(\frac{y}{100}\times x)$

$\Rightarrow y=2$ after 20 years.

$x+20(\frac{y}{100}\times x)=x+5x$

Many will become $5$ times more