• # question_answer The simple interest accrued in 3 years on a principal of Rs. 25,000 is three-twentieth of the principal. What is the rate of simple interest p.c.p.a? A)  5                    B)  4 C)  6                    D)       3

Simple interest $=\frac{3}{20}2500$ Rs. 3750 $\therefore$ $Rate=\frac{S.I.\,\,\,\,100}{\Pr incipal\times Time}$             $=\frac{3750\,\,\,\,100}{25000\times 3}=5%$ per annum Quicker Approach S.I. $=\frac{3}{20}$ Principle $\therefore$ $\frac{S.I.}{\Pr incipal}=\frac{3}{20}$ $\therefore$ $Rate=\frac{S.I.}{\Pr incipal}\,\,\,\frac{100}{Time}$ $=\frac{3}{20\,}\,\,\,\,\frac{100}{3}=5%$   per annum