Quantitative Aptitude Ques 2170

Question: At what per cent above the cost price, must a shopkeeper marks his goods so that he gains 20% even after giving a discount of 10% on the marked price?

Options:

A) 25%

B) 30%

C) $ 33\frac{1}{3}% $

D) $ 37\frac{1}{2}% $

Show Answer

Answer:

Correct Answer: C

Solution:

  • Let the CP be Rs. 100. Then, SP = Rs. 120 Let the marked price be Rs. x. Then, 90% of x =120

$ \Rightarrow $ $ x=\frac{120\times 100}{90}=\frac{400}{3}=133\frac{1}{3}% $ It means he should mark $ ( 133\frac{1}{3}-100 )=33\frac{1}{3}% $ higher than CP.