A number increased by 10% gives 55. The number is: MCQ with Answer and Explanation

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A number increased by 10% gives 55. The number is:

A. 45

B. 48

C. 52

D. 50

Answer: Option D

Solution (By JKExamLibrary)

1.1x = 55 → x = 50.

This question belongs to: Maths Percentage

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Question #1

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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. 2:3

B. 3:4

C. 4:5

D. 5:8

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Correct Answer: Option C

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

This question belongs to: Maths Percentage

Question #2

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If 15% of x is the same as 20% of y, then x:y is:

A. 4:3

B. 5:3

C. 3:5

D. 3:4

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Correct Answer: Option A

Explanation:
0.15x = 0.2y → x/y = 0.2/0.15 = 4/3 → 4:3.

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Question #3

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If 50% of a number is added to another, second becomes 140% of itself. Ratio of first to second:

A. 4:5

B. 2:5

C. 3:5

D. 5:4

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Correct Answer: Option A

Explanation:
0.5F + S = 1.4S → 0.5F = 0.4S → F/S = 0.4/0.5 = 4/5.

This question belongs to: Maths Percentage

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