If the numerator of a fraction is increased by 50% and denominator decreased by 25%, the fraction becomes 3/2. Original fraction: MCQ with Answer and Explanation

Question

If the numerator of a fraction is increased by 50% and denominator decreased by 25%, the fraction becomes 3/2. Original fraction:

A. 4/5

B. 7/8

C. 5/8

D. 3/4

Answer: Option D

Solution (By JKSSB Mock Tests)

(1.5a)/(0.75b) = 2a/b = 3/2 → a/b = 3/4.

This question belongs to: Maths Percentage

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Question #1

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Student A gets 30% marks and fails by 15 marks. Student B gets 40% marks and gets 15 marks more than passing. What is the total marks?

A. 300

B. 250

C. 400

D. 350

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Correct Answer: Option A

Explanation:
Difference in percentage = 40% - 30% = 10%. Difference in marks = 15 - (-15) = 30. 10% of Maximum = 30. Maximum = 300.

This question belongs to: Maths Percentage

Question #2

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What percent is 250 g of 2 kg?

A. 12.5%

B. 15%

C. 20%

D. 10%

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Correct Answer: Option A

Explanation:
2 kg = 2000 g, (250/2000)×100 = 12.5%.

This question belongs to: Maths Percentage

Question #3

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Length, breadth, height increased 10%, 20%, 30%. % increase in volume:

A. 72.8%

B. 66%

C. 71.6%

D. 60%

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Correct Answer: Option C

Explanation:
1.1×1.2×1.3 = 1.716, increase 71.6%.

This question belongs to: Maths Percentage

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