A number increased by 18% then decreased by 18% gives net: MCQ with Answer and Explanation

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A number increased by 18% then decreased by 18% gives net:

A. 3.24% increase

B. 3.24% decrease

C. 0%

D. 2% decrease

Answer: Option B

Solution (By JKExamLibrary)

1.18 × 0.82 = 0.9676, 3.24% decrease.

This question belongs to: Maths Percentage

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Practice More Percentage Questions

Question #1

If x is 50% of y, what percentage of x is y?

A. 250%

B. 200%

C. 100%

D. 150%

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Correct Answer: Option B

Explanation:
x = 0.5y. Therefore, y = x / 0.5 = 2x. Thus, y is 200% of x.

This question belongs to: Maths Percentage

Question #2

A man spends 70% of his income. If he saves Rs. 3000, what is his total income?

A. 8000

B. 10000

C. 9000

D. 12000

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Correct Answer: Option B

Explanation:
Savings = 100% - 70% = 30%. 30% of Income = 3000. Income = 3000 * (100 / 30) = 10000.

This question belongs to: Maths Percentage

Question #3

A man's salary is increased by 10% in the first year, by 20% in the second year, and decreased by 10% in the third year. If his final salary is Rs. 35640, find his initial salary.

A. Rs. 25000

B. Rs. 32000

C. Rs. 27000

D. Rs. 30000

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Correct Answer: Option D

Explanation:
Multiplier = 1.1 × 1.2 × 0.9 = 1.188. Initial = 35640/1.188 = 30000.

This question belongs to: Maths Percentage

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