Question

Mark (✓) against the correct answer
The simple interest at x% per annum for x years will be Rs x on a sum of

(a) Rs x
(b) Rs 100x
(c) $\mathrm{Rs}\left(\frac{100}{x}\right)$
(d) $\mathrm{Rs}\left(\frac{100}{x^2}\right)$

Answer 1

(c) Rs. $\left(\frac{100}{x}\right)$


$\begin{array}{l}\text{Simple Interest=Rs}\text{.}x\\ \text{Rate=}x\%\text{per annum}\\ \text{Time =}x\text{years}\\ \text{Simple Interest=}\frac{\text{Principal×Rate×Time}}{100}\\ =>\cancel{x}=\frac{\text{Principal}\times \cancel{x}\times x}{100}\\ =>\text{Principal}=\text{Rs}\text{.}\frac{100}{x}\end{array}$