A number divided by 4, quotient increased by 25% then decreased by 20% gives 150. Number: MCQ with Answer and Explanation

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A number divided by 4, quotient increased by 25% then decreased by 20% gives 150. Number:

A. 600

B. 560

C. 640

D. 540

Answer: Option A

Solution (By JKSSB Mock Tests)

(N/4)×1.25×0.8 = (N/4)×1 = 150 → N/4=150 → N=600.

This question belongs to: Maths Percentage

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Question #1

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A can do a work in 15 days and B in 20 days. They work together for 6 days, then A leaves. In how many more days will B finish the remaining work?

A. 5 days

B. 8 days

C. 6 days

D. 4 days

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Correct Answer: Option C

Explanation:
Work done in 6 days = 6×(1/15+1/20)=6×(7/60)=7/10. Remaining=3/10. B's rate=1/20, time = (3/10)×20=6 days.

This question belongs to: Maths Percentage

Question #2

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Marked 30% above CP, discount 20%. Profit %:

A. 6%

B. 5%

C. 4%

D. 8%

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Correct Answer: Option C

Explanation:
CP=100, MP=130, SP=104, profit 4%.

This question belongs to: Maths Percentage

Question #3

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A shopkeeper marks his goods 25% above cost price and allows a discount of 10%. His gain percent is:

A. 17.5%

B. 10.5%

C. 15%

D. 12.5%

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Correct Answer: Option D

Explanation:
CP=100, MP=125, SP=112.5, gain 12.5%.

This question belongs to: Maths Percentage

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