A student multiplied a number by 2/3 instead of 3/2. What is the percentage error? MCQ with Answer and Explanation

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A student multiplied a number by 2/3 instead of 3/2. What is the percentage error?

A. 55.55%

B. 44.44%

C. 66.66%

D. 50%

Answer: Option A

Solution (By JKSSB Mock Tests)

True = 3/2x. False = 2/3x. Error = (3/2 - 2/3)x = (5/6)x. % Error = ((5/6) / (3/2)) * 100 = (10/18) * 100 = 55.55%.

This question belongs to: Maths Percentage

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Practice More Percentage Questions

Question #1

120 increased by 18% is:

A. 136.6

B. 140.2

C. 141.6

D. 138.4

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Correct Answer: Option C

Explanation:
120 × 1.18 = 141.6.

This question belongs to: Maths Percentage

Question #2

Radius of circle decreased 10%. Area decreases by:

A. 17%

B. 20%

C. 21%

D. 19%

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Correct Answer: Option D

Explanation:
Area multiplier = 0.9² = 0.81, decrease 19%.

This question belongs to: Maths Percentage

Question #3

Find the single equivalent discount for successive discounts of 20% and 20%.

A. 40%

B. 38%

C. 42%

D. 36%

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Correct Answer: Option D

Explanation:
Equivalent discount = 20 + 20 - (20 * 20 / 100) = 40 - 4 = 36%.

This question belongs to: Maths Percentage

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