Question

How long will take for a sum of money to treble itself at 15% per annum simple interest​

Answer 1

Let p = x, then A = 3x

⇉So, I = A−P

⇉3x − x = 2x

↬We know that S.I = $\frac{P×R×T}{100}$

↬2x = $\frac{X×15×T}{100}$

↬T = $\frac{2x × 100}{X× 15}$

➽ $\frac{40}{3}$ = 13.3 years

Answer 2

Answer:

Let p = x, then A = 3x

⇉So, I = A−P

⇉3x − x = 2x

↬We know that S.I = \frac{P×R×T}{100}

100

P×R×T

↬2x = \frac{X×15×T}{100}

100

X×15×T

↬T = \frac{2x × 100}{X× 15}

X×15

2x×100

➽ \frac{40}{3}

3

40

= 13.3 years