Question

Megha bought 10 note-books for Rs.40 and sold them at Rs.4.75 per note-book. Find her gain percent.

Answer 1

C.P. of 10 note-books = Rs. 40
S.P. of 10 note-books @ Rs. 4.75 per note-book
= 4.75 $\times$ 10 = Rs. 47.50
Gain = S.P. - C.P.
=Rs. 47.50 - Rs. 40 = Rs.7.50
Gain % = $\frac{Gain}{C.P.}\times$ 100
= $\frac{7.50}{40}\times 100=\frac{750}{40}$%
= $\frac{75}{4}$%