A number is divided by 5 and the quotient is increased by 10% then decreased by 10%. The result is 198. Find the number. MCQ with Answer and Explanation

Question

A number is divided by 5 and the quotient is increased by 10% then decreased by 10%. The result is 198. Find the number.

A. 1100

B. 900

C. 1000

D. 800

Answer: Option C

Solution (By JKSSB Mock Tests)

(N/5)×1.1×0.9 = (N/5)×0.99 = 198 → N/5 = 200 → N=1000.

This question belongs to: Maths Percentage

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Question #1

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A number increased by 25% becomes 150. The number is:

A. 115

B. 110

C. 125

D. 120

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Correct Answer: Option D

Explanation:
1.25x = 150 → x = 120.

This question belongs to: Maths Percentage

Question #2

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A man spends 50% of his income. His income rises by 50% and expenditure by 20%. Percentage increase in savings is:

A. 90%

B. 60%

C. 70%

D. 80%

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Correct Answer: Option D

Explanation:
Let income = 100, exp = 50, sav = 50. New income = 150, exp = 60, sav = 90. Increase = 40 on 50 = 80%.

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Question #3

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The population of a town increases by 15% in the first year and decreases by 10% in the second year. If the population at the end of second year is 10350, what was the population at the beginning?

A. 10000

B. 9500

C. 9000

D. 10500

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Correct Answer: Option A

Explanation:
Net multiplier = 1.15 × 0.9 = 1.035. Population = 10350/1.035 = 10000.

This question belongs to: Maths Percentage

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