If 18% of x is 90, then x = ? MCQ with Answer and Explanation

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If 18% of x is 90, then x = ?

A. 450

B. 550

C. 500

D. 400

Answer: Option C

Solution (By JKSSB Mock Tests)

0.18x = 90 → x = 500.

This question belongs to: Maths Percentage

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Question #1

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

A. 68%

B. 70%

C. 74%

D. 72%

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Correct Answer: Option C

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

This question belongs to: Maths Percentage

Question #2

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Find the single equivalent discount for successive discounts of 50% and 50%.

A. 75%

B. 100%

C. 80%

D. 50%

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Correct Answer: Option A

Explanation:
Equivalent discount = 50 + 50 - (50 * 50 / 100) = 100 - 25 = 75%.

This question belongs to: Maths Percentage

Question #3

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A's salary increased by 25% then decreased by 25%. Original salary 8000, final salary:

A. 7400

B. 7500

C. 7200

D. 7800

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Correct Answer: Option B

Explanation:
8000 × 1.25 × 0.75 = 8000 × 0.9375 = 7500.

This question belongs to: Maths Percentage

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