1.  A trader marks up his goods by 80% and gives discount of 25%. Besides it he weighs 10% less amount while selling his goods. What is the net profit of trader?
A. 50%
B. 35%
C. 45%
D. 55%

Answer: Option A

Explanation:

Consider actual price of 1 g goods = Re. 1.

He sells the product equals to ₹ 90 only (10% less weighing)

Again MP = ₹ 1.8 and SP = 1.35 for 1 g.

Thus he gives the goods worth ₹ 90 and charges ₹ 135 after 25% discount.

Thus the profit % = [(135 - 90) / 90 ] x 100

                               = 50%