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1. A dishonest trader marks up his goods by 80% and gives discount of 25%. Besides he gets 20% more amount per kg from wholesaler and sells 10% less per kg to customer. What is the overall profit percentage?

A. 50%

B. 60%

C. 70%

D. 80%

Solution:

CP =

\frac{100}{120} = \frac{10}{12}

[Since, he purchases 120 g and pays Rs. 100, by assumption actual CP of 1 g = Re. 1]
SP =

\frac{135}{90} = \frac{3}{2} = \frac{18}{15}

[Since, Actual MP = 180 as he mark up 80% above, SP = 135, with 25% discount and he sells 90 g instead of 100g]
Percentage Profit =

\frac{\frac{18}{12} - \frac{10}{12}}{\frac{10}{12}} \times 100 = 80 %

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