I purchased 120 exercise books at the rate of Rs. 3 each and sold $$\frac{1}{3}$$ of them at the rate of Rs. 4 each, $$\frac{1}{2}$$ of them at the rate of Rs. 5 each and the rest at the cost price. My profit percent is -

A. 44%

B. $$44\frac{2}{3}$$%

C. $$44\frac{4}{9}$$%

D. 45%

Answer: Option C

Solution(By Examveda Team)

Total C.P. = Rs. (120 × 3) = Rs. 360
Total S.P. = Rs. (40 × 4 + 60 × 5 + 20 × 3) = Rs. 520
Profit = Rs. (520 - 360) = Rs. 160
$$\eqalign{ & \therefore {\text{Profit}}\% \cr & = \left( {\frac{{160}}{{360}} \times 100} \right)\% \cr & = \left( {\frac{{400}}{9}} \right)\% \cr & = 44\frac{4}{9}\% \cr} $$