Question

By selling 18 articles, a shopkeeper earns the cost price of 24 articles. By what percent should he increase the selling price so that by selling 24 articles, he earns cost price of 36 articles?
A) 10%
B) 20%
C) 12.50%
D) 25%

Answer 1

ur answer is 20 %

he earn cost price of 36 articles when he increase by 20 percent

Answer 2

Answer is C) 12.50%

1st case. 2nd case

24 CP = 18 SP. 36 CP = 24 SP

CP/SP = 18/24. CP/SP = 24/36

= 3/4. =2/3

here SP = 4 Now, Cost price is same;

CP/SP = (2×3/2) / (3×3/2)

= 3/4.5 ,

here SP = 4.5

% increase in SP = (0.5/4)×100

= 12.5%