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. 20000

B. Rs. 22500

C. Rs. 25000

D. Rs. 27500

Answer: Option B

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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Fresh fruit has 72% water, dry fruit 25% water. Dry fruit from 120 kg fresh fruit:

A. 50 kg

B. 42 kg

C. 48 kg

D. 44.8 kg

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Correct Answer: Option D

Explanation:
Dry matter in fresh = 28% of 120 = 33.6 kg, in dry fruit 75% is dry matter, weight = 33.6/0.75 = 44.8 kg.

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Question #2

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The ratio of the ages of A and B is 5:7. After 10 years, the ratio will be 7:9. Find the present age of A.

A. 20 years

B. 35 years

C. 25 years

D. 30 years

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Correct Answer: Option C

Explanation:
Let ages 5x, 7x. (5x+10)/(7x+10) = 7/9 → 45x+90 = 49x+70 → 4x=20 → x=5, A=25.

This question belongs to: Maths Percentage

Question #3

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60% of a number is 30 less than 75% of the same number. The number is:

A. 200

B. 240

C. 150

D. 180

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Correct Answer: Option A

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0.75x - 0.6x = 30 → 0.15x = 30 → x = 200.

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