Weight reduced from 90 kg to 81 kg. Percentage decrease: MCQ with Answer and Explanation

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Weight reduced from 90 kg to 81 kg. Percentage decrease:

A. 11%

B. 8%

C. 9%

D. 10%

Answer: Option D

Solution (By JKSSB Mock Tests)

Decrease = 9 kg, (9/90)×100 = 10%.

This question belongs to: Maths Percentage

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Question #1

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A candidate secures 45% of votes and loses the election by 200 votes. Find the total number of votes cast.

A. 1800

B. 1500

C. 2000

D. 2500

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Correct Answer: Option C

Explanation:
Loser = 45%, Winner = 55%. Difference = 10%. 10% of Total = 200. Total = 2000.

This question belongs to: Maths Percentage

Question #2

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The price of an article is increased by r% and then decreased by r%. If the net decrease is 1%, find r.

A. 5

B. 8

C. 12

D. 10

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Correct Answer: Option D

Explanation:
1 - r²/10000 = 0.99 → r² = 100 → r = 10.

This question belongs to: Maths Percentage

Question #3

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By what percent is 120 less than 150?

A. 18%

B. 15%

C. 20%

D. 25%

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Correct Answer: Option C

Explanation:
Difference = 30, % = (30/150)×100 = 20%.

This question belongs to: Maths Percentage

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