A number is increased by 10% and then the new number is decreased by 10%. If the final result is 99, find the original number. MCQ with Answer and Explanation

Question

A number is increased by 10% and then the new number is decreased by 10%. If the final result is 99, find the original number.

A. 95

B. 100

C. 105

D. 90

Answer: Option B

Solution (By JKSSB Mock Tests)

1.1 × 0.9 = 0.99, 0.99x = 99 → x = 100.

This question belongs to: Maths Percentage

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Question #1

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In a village of 8000, 55% are below poverty line. Number not below poverty line:

A. 4400

B. 3200

C. 3600

D. 4000

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Correct Answer: Option C

Explanation:
45% of 8000 = 3600.

This question belongs to: Maths Percentage

Question #2

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If A's salary is 25% more than B's salary, then by what percentage is B's salary less than A's salary?

A. 25%

B. 30%

C. 22.5%

D. 20%

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Correct Answer: Option D

Explanation:
Let B's salary be 100. A's salary = 125. B is 25 less than A. Percentage = (25 / 125) * 100% = 20%.

This question belongs to: Maths Percentage

Question #3

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3/8 expressed as percent is:

A. 33.5%

B. 37.5%

C. 35%

D. 30%

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Correct Answer: Option B

Explanation:
(3/8)×100 = 37.5%.

This question belongs to: Maths Percentage

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