Question

Meena took a loan of Rs. 1200 with simple interest for as many years equal to the rate of interest. If she paid Rs. 432 as interest at the end of the loan period, what was the number of years for which the loan was taken?

• A. 3
• B. 4
• C. 6
• D. 7

Answer 1

The correct option is C

6

Let rate = R% and time = R years.

$\frac{1200\times R\times R}{100}$ = 432

$\Rightarrow 12(R\times R)=432$

$\Rightarrow (R\times R)=36$

$\Rightarrow R=6$