A man spends 40% of his income on food, 25% on rent, 15% on education and saves the rest. If his savings are Rs. 4500, find his income. MCQ with Answer and Explanation

Question

A man spends 40% of his income on food, 25% on rent, 15% on education and saves the rest. If his savings are Rs. 4500, find his income.

A. Rs. 22500

B. Rs. 25000

C. Rs. 20000

D. Rs. 27500

Answer: Option A

Solution (By JKSSB Mock Tests)

Spend % = 40+25+15 = 80%, save 20% = 4500, income = 4500/0.2 = 22500.

This question belongs to: Maths Percentage

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Question #1

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If the price of sugar increases by 25%, by what percentage must consumption be reduced so that expenditure remains the same?

A. 15%

B. 20%

C. 30%

D. 25%

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Correct Answer: Option B

Explanation:
Required reduction = (R / (100 + R)) * 100. (25 / 125) * 100 = 20%.

This question belongs to: Maths Percentage

Question #2

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

A. 25%

B. 20%

C. 15%

D. 30%

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Correct Answer: Option B

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

This question belongs to: Maths Percentage

Question #3

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The present population of a town is 10,890. If it increases by 10% yearly, what was its population 2 years ago?

A. 8000

B. 10000

C. 9500

D. 9000

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Correct Answer: Option D

Explanation:
P_past = P_present / (1 + R/100)^2 = 10890 / (1.10)^2 = 10890 / 1.21 = 9000.

This question belongs to: Maths Percentage

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