If 60% of a number is subtracted from another number, the second number reduces to 52% of itself. Find the ratio of the first to the second. MCQ with Answer and Explanation

Question

If 60% of a number is subtracted from another number, the second number reduces to 52% of itself. Find the ratio of the first to the second.

A. 4:5

B. 3:4

C. 2:3

D. 5:8

Answer: Option A

Solution (By JKExamLibrary)

y - 0.6x = 0.52y → 0.48y = 0.6x → x/y = 0.48/0.6 = 4/5.

This question belongs to: Maths Percentage

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Question #1

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A number decreased by 20% becomes 64. The number is:

A. 84

B. 76

C. 80

D. 72

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Correct Answer: Option C

Explanation:
0.8x = 64 → x = 80.

This question belongs to: Maths Percentage

Question #2

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10% voters did not vote in an election. The winner got 60% of polled votes and won by 900 votes. Total voters:

A. 6000

B. 5000

C. 4500

D. 5500

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Correct Answer: Option B

Explanation:
Polled votes P=0.9T. Margin 0.2P = 900 → P=4500 → T=5000.

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Question #3

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A candidate got 65% votes and won by 300 votes. Total votes polled:

A. 1200

B. 1000

C. 900

D. 800

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Correct Answer: Option B

Explanation:
Margin = 30% of total = 300 → total = 1000.

This question belongs to: Maths Percentage

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