A boy buys 12 pencils for Rs. 10 and sells 10 pencils for Rs. 12. Find his gain percentage. MCQ with Answer and Explanation

A boy buys 12 pencils for Rs. 10 and sells 10 pencils for Rs. 12. Find his gain percentage.
A. 40%
B. 42%
C. 44%
D. 45%
Answer: Option C
Solution (By JKSSB Mock Tests)
Cost Price of 1 pencil = 10 / 12 = 5 / 6. Selling Price of 1 pencil = 12 / 10 = 6 / 5. Profit = (6 / 5) - (5 / 6) = (36 - 25) / 30 = 11 / 30. Profit percentage = ((11 / 30) / (5 / 6)) * 100 = (11 / 25) * 100 = 44%.

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Practice More Profit And Loss Questions

Question #1
A person sells a watch for Rs. 900, gaining 12.5%. Find the cost price.
A. Rs. 800
B. Rs. 820
C. Rs. 780
D. Rs. 840

Correct Answer: Option A


Explanation:
CP = 900 / 1.125 = 800.

This question belongs to: Maths Profit And Loss
Question #2
Two lots of onions with equal quantity, one costing Rs. 10 per kg and the other costing Rs. 15 per kg, are mixed together and whole lot is sold at Rs. 15 per kg. What is the profit or loss percentage?
A. 25% profit
B. 20% loss
C. 20% profit
D. No profit no loss

Correct Answer: Option C


Explanation:
Let quantity of each be 1 kg. Total Cost Price = 10 + 15 = 25 for 2 kg. Cost Price per kg = 12.5. Selling Price per kg = 15. Profit = 2.5. Profit percentage = (2.5 / 12.5) * 100 = 20%.

This question belongs to: Maths Profit And Loss
Question #3
A man sells an article for Rs. 264, gaining 20%. What is the cost price?
A. Rs. 230
B. Rs. 240
C. Rs. 220
D. Rs. 210

Correct Answer: Option C


Explanation:
CP = 264 / 1.20 = 220.

This question belongs to: Maths Profit And Loss