Question

In what time will the sum of money at 12% per annum simple interest doubles itself

Answer 1

$\color {red}\huge\bold\star\underline\mathcal{Question:-}$

In what time will the sum of money at 12% per annum simple interest doubles itself ?

$\bold{\boxed{\huge{\boxed{\orange{\small{\boxed{\huge{\red{\bold{\:Answer}}}}}}}}}}$

Principal is Two Times at 12% in some year...

we know That ,

$time = \frac{(times - 1) \times 100}{rate} \\ \\ time = \frac{(2 - 1) \times 100}{12} \\ \\ time = \frac{25}{3} \\ \\ time = 8 \times \frac{1}{3} \\ \\ time = 8years + 4months$