A student multiplied a number by 5/3 instead of 3/5. What is the percentage error? MCQ with Answer and Explanation

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A student multiplied a number by 5/3 instead of 3/5. What is the percentage error?

A. 100%

B. 64%

C. 150%

D. 177.77%

Answer: Option D

Solution (By JKSSB Mock Tests)

True = 3/5x. False = 5/3x. Error = (5/3 - 3/5)x = (16/15)x. % Error = ((16/15) / (3/5)) * 100 = (16/9) * 100 = 177.77%.

This question belongs to: Maths Percentage

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Practice More Percentage Questions

Question #1

In a village of 5000, 40% are below poverty line. Number not below poverty line:

A. 2500

B. 3000

C. 3500

D. 2000

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Correct Answer: Option B

Explanation:
60% of 5000 = 3000.

This question belongs to: Maths Percentage

Question #2

A train 150 m long crosses a pole in 10 seconds. What is its speed in kmph?

A. 60 kmph

B. 45 kmph

C. 54 kmph

D. 36 kmph

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Correct Answer: Option C

Explanation:
Speed = 150/10 = 15 m/s = 15 × 18/5 = 54 kmph.

This question belongs to: Maths Percentage

Question #3

A's income is 25% more than B's, B's is 20% more than C's. A's income is what percent more than C's?

A. 40%

B. 45%

C. 55%

D. 50%

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Correct Answer: Option D

Explanation:
C=100, B=120, A=150, so A is 50% more than C.

This question belongs to: Maths Percentage

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