Question

A shopkeeper buys pencils at 10 for ₹10 and sells them at 8 for ₹ 10.find the profit %

Answer 1

C.p. of 1 pencil = 1 rupee
S.p. of 1 pencil = 1.25 rupees
so profit = 0.25 rupee
so profit % = 0.25/1 *100 = 25%

Answer 2

Cost price per pencil = 8/10 = 0.8.

Selling price per pencil = 10/8 = 1.25.

Gain = 1.25 - 0.8 = 0.45

%gain = (0.45 *100)/0.8 = 56.25%.