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

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

A. 150%

B. 177.78%

C. 166.67%

D. 180%

Answer: Option B

Solution (By JKSSB Mock Tests)

Correct = 3x/5, wrong = 5x/3. Error % = [(5/3 - 3/5)/(3/5)]×100 = (16/9)×100 ≈ 177.78%.

This question belongs to: Maths Percentage

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Question #1

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A candidate wins an election by securing 58% of the total votes. If the majority is 640 votes, what is the total number of votes cast?

A. 4500

B. 3500

C. 4000

D. 3000

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Correct Answer: Option C

Explanation:
Winner = 58%, Loser = 42%. Difference = 16%. 16% of Total = 640. Total = 640 * (100 / 16) = 4000.

This question belongs to: Maths Percentage

Question #2

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A man's income Rs. 15000. Spends 40% food, 20% rent, 15% education, 10% others. By what % reduce food expenditure to increase savings by 25%?

A. 8.5%

B. 9.375%

C. 10%

D. 12.5%

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Correct Answer: Option B

Explanation:
Present savings 15% = 2250, food=6000. New savings 2812.5, increase 562.5 from food reduction. % reduction = (562.5/6000)×100 = 9.375%.

This question belongs to: Maths Percentage

Question #3

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75% of 48 is:

A. 36

B. 34

C. 32

D. 38

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Correct Answer: Option A

Explanation:
0.75 × 48 = 36.

This question belongs to: Maths Percentage

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