A shopkeeper sells a book for Rs. 315, gaining 5%. Find the cost price. MCQ with Answer and Explanation

A shopkeeper sells a book for Rs. 315, gaining 5%. Find the cost price.
A. Rs. 300
B. Rs. 310
C. Rs. 320
D. Rs. 290
Answer: Option A
Solution (By JKSSB Mock Tests)
CP = 315 / 1.05 = 300.

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Practice More Profit And Loss Questions

Question #1
A dealer offers a discount of 10% on the marked price of an article and still makes a profit of 20%. If its marked price is Rs. 800, then the cost price is:
A. Rs. 550
B. Rs. 500
C. Rs. 600
D. Rs. 650

Correct Answer: Option C


Explanation:
SP = 90% of 800 = 720. Profit is 20%, so SP = 1.2 * CP. 1.2 * CP = 720. CP = 720 / 1.2 = Rs. 600.

This question belongs to: Maths Profit And Loss
Question #2
A man sells an article at 5% above its cost price. If he had bought it at 5% less and sold it for Rs. 2 less, he would have gained 10%. Find the original cost price.
A. Rs. 500
B. Rs. 300
C. Rs. 400
D. Rs. 200

Correct Answer: Option C


Explanation:
Let original CP = x. Original SP = 1.05x. New CP = 0.95x. New SP = 1.05x - 2. New profit is 10% on new CP, so New SP = 1.10 * 0.95x = 1.045x. Equating the two new SPs: 1.045x = 1.05x - 2. Therefore, 0.005x = 2, which gives x = 2 / 0.005 = 400.

This question belongs to: Maths Profit And Loss
Question #3
A shopkeeper sells a chair for Rs. 800, gaining 25%. Find the cost price.
A. Rs. 680
B. Rs. 620
C. Rs. 660
D. Rs. 640

Correct Answer: Option D


Explanation:
CP = 800/1.25 = 640.

This question belongs to: Maths Profit And Loss