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
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Question #1
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A man gave 25% to wife, 20% of remainder to son, 25% of remainder to daughter, rest Rs. 9000 to charity. Total amount:
Correct Answer: Option D
Explanation:
Wife 25%, left 75%. Son 20% of 75%=15%, left 60%. Daughter 25% of 60%=15%, left 45% = 9000 → total = 20000.
Wife 25%, left 75%. Son 20% of 75%=15%, left 60%. Daughter 25% of 60%=15%, left 45% = 9000 → total = 20000.
This question belongs to:
Maths
Percentage
Question #2
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Price reduced 25%, enables buying 3 kg more for Rs. 90. Reduced price/kg:
Correct Answer: Option D
Explanation:
Original price x, xy=90. New 0.75x(y+3)=90 → 0.75×90 + 2.25x=90 → x=10, reduced 7.5.
Original price x, xy=90. New 0.75x(y+3)=90 → 0.75×90 + 2.25x=90 → x=10, reduced 7.5.
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?
Correct Answer: Option A
Explanation:
Net change = x^2 / 100 % decrease. 30^2 / 100 = 900 / 100 = 9% decrease.
Net change = x^2 / 100 % decrease. 30^2 / 100 = 900 / 100 = 9% decrease.
This question belongs to:
Maths
Percentage
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