ArithmeticA certain sum of money becomes 7/4 times of itself in 6 years at a certain rate. Find the rate.

A certain sum of money becomes 7/4 times of itself in 6 years at a certain rate. Find the rate.

$\frac{7}{4} - 1 \Rightarrow \frac{7 - 4}{4} = \frac{3}{4}$

$\frac{3}{4} P = \frac{P \times 6 \times R}{100} \Rightarrow R = \frac{25}{2} = 12 \frac{1}{2} %$