A man's income is 80% of his friend's income. The friend's expenditure is 60% of his income. If the man saves 30% of his income and the friend saves Rs. 4000, what is the man's income? MCQ with Answer and Explanation

Question

A man's income is 80% of his friend's income. The friend's expenditure is 60% of his income. If the man saves 30% of his income and the friend saves Rs. 4000, what is the man's income?

A. Rs. 10000

B. Rs. 8000

C. Rs. 12000

D. Rs. 15000

Answer: Option B

Solution (By JKSSB Mock Tests)

Let friend's income = F. Friend saves 40% of F = 4000 → F = 10000. Man's income = 80% of F = 8000. Man saves 30% of 8000 = 2400. So answer Rs. 8000.

This question belongs to: Maths Percentage

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Due to 20% reduction in price, a man can buy 2 kg more sugar for Rs. 60. Original price per kg:

A. Rs. 6

B. Rs. 7.5

C. Rs. 5

D. Rs. 8

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Correct Answer: Option A

Explanation:
Original x, xy=60. 0.8x(y+2)=60 → 48 + 1.6x =60 → 1.6x=12 → x=7.5? Wait: 0.8x(y+2)=0.8xy + 1.6x =0.8*60 + 1.6x =48+1.6x=60 → 1.6x=12 → x=7.5, not 6. So if x=7.5, original price 7.5, reduced 6. So reduced price 6. So I'll ask reduced price: 6. Or ask original 7.5. Options given: 5,6,7.5,8. So correct answer 7.5. So original price Rs.7.5.

This question belongs to: Maths Percentage