Question

Mohit deposited a sum of ₹ 12000 in a Bank at a certain rate of interest for 2 years and earns an interest of ₹ 900. How much interest would be earned for a deposit of ₹ 15000 for the same period and at the same rate of interest?

Answer 1

Let the required amount of interest be ₹ x.

Deposit (in ₹)	12000	15000
Interest (in ₹)	900	x

Since there is a direct variations.

$\therefore \frac{x_1}{y_1}=\frac{x_2}{y_2}$

$\Rightarrow \frac{12000}{900}=\frac{15000}{x}$

$\Rightarrow 12000\times x=900\times 15000$

$\Rightarrow x=\frac{900\times 15000}{12000}$

$\Rightarrow x=1125$

Hence, the required amount of interest = ₹ 1125.