Increase 500 by 10%. Result is: MCQ with Answer and Explanation

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Increase 500 by 10%. Result is:

A. 550

B. 600

C. 510

D. 505

Answer: Option A

Solution (By JKSSB Mock Tests)

500 × 1.1 = 550.

This question belongs to: Maths Percentage

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Question #1

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The price of a commodity is increased by x% then decreased by x%. Net decrease is 4%. Find x.

A. 20

B. 10

C. 15

D. 25

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Correct Answer: Option A

Explanation:
(1+x/100)(1-x/100) = 0.96 → 1 - x²/10000 = 0.96 → x² = 400 → x = 20.

This question belongs to: Maths Percentage

Question #2

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Office 70% men. 80% of men and 60% of women have car. % of workers with car:

A. 72%

B. 74%

C. 68%

D. 70%

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Correct Answer: Option B

Explanation:
Men with car = 56% of total, women = 18%, total 74%.

This question belongs to: Maths Percentage

Question #3

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Population 1,25,000. First year +10%, second year -5%. Population after 2 years:

A. 1,33,750

B. 1,30,625

C. 1,28,125

D. 1,32,500

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Correct Answer: Option B

Explanation:
1,25,000 × 1.1 × 0.95 = 1,30,625.

This question belongs to: Maths Percentage

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