A man saves 18% of salary Rs. 12000. His expenditure: MCQ with Answer and Explanation

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A man saves 18% of salary Rs. 12000. His expenditure:

A. 9960

B. 9840

C. 9560

D. 9640

Answer: Option B

Solution (By JKSSB Mock Tests)

Spends 82% of 12000 = 9840.

This question belongs to: Maths Percentage

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Question #1

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If A is 25% more than B, then B is what percentage less than A?

A. 20%

B. 30%

C. 25%

D. 15%

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Correct Answer: Option A

Explanation:
Formula: (R / (100 + R)) * 100. Here R = 25. (25 / 125) * 100 = (1 / 5) * 100 = 20%.

This question belongs to: Maths Percentage

Question #2

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Computer price reduced 20%, sale increased 80%. Net effect on revenue:

A. 56% increase

B. 36% increase

C. 44% increase

D. 24% increase

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Correct Answer: Option C

Explanation:
New revenue = 0.8×1.8 = 1.44, increase 44%.

This question belongs to: Maths Percentage

Question #3

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A salary is increased by 30% and then decreased by 30%. What is the net change?

A. 6% decrease

B. 9% increase

C. 9% decrease

D. 0%

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Correct Answer: Option C

Explanation:
Net change = x^2 / 100 % decrease. 30^2 / 100 = 900 / 100 = 9% decrease.

This question belongs to: Maths Percentage

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