A shopkeeper sells a watch for Rs. 780, gaining 30%. Find the cost price. MCQ with Answer and Explanation

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A shopkeeper sells a watch for Rs. 780, gaining 30%. Find the cost price.

A. Rs. 600

B. Rs. 620

C. Rs. 580

D. Rs. 640

Answer: Option A

Solution (By JKSSB Mock Tests)

CP = 780 / 1.30 = 600.

This question belongs to: Maths Profit And Loss

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Question #1

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A man sold a mobile for Rs. 15000, gaining 25%. Find the cost price.

A. Rs. 13000

B. Rs. 11500

C. Rs. 12500

D. Rs. 12000

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Correct Answer: Option D

Explanation:
CP = 15000 / 1.25 = 12000.

This question belongs to: Maths Profit And Loss

Question #2

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A dishonest dealer cheats by 10% while buying and 10% while selling using false weights. He marks up his goods by 20% and gives a discount of 10%. Find his true overall profit percentage.

A. 33.1%

B. 28%

C. 30.68%

D. 32%

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Correct Answer: Option D

Explanation:
Multiplier factor = (110 / 100) * (100 / 90) * (120 / 100) * (90 / 100). Value = 1.1 * 1.1111 * 1.2 * 0.9 = 1.32. Profit percentage = 32%.

This question belongs to: Maths Profit And Loss