Income of A is 20% more than B. B's expenditure is 30% less than A's. A saves 10% of his income. B saves what % of his income? MCQ with Answer and Explanation

Question

Income of A is 20% more than B. B's expenditure is 30% less than A's. A saves 10% of his income. B saves what % of his income?

A. 24.4%

B. 26.4%

C. 28.4%

D. 22.4%

Answer: Option A

Solution (By JKSSB Mock Tests)

Let B inc = 100, A inc = 120. A sav = 12, A exp = 108. B exp = 70% of 108 = 75.6. B sav = 100-75.6 = 24.4, i.e. 24.4%.

This question belongs to: Maths Percentage

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Question #1

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A number is increased by 20% and then decreased by 20%. What is the net change?

A. 4% increase

B. No change

C. 2% decrease

D. 4% decrease

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Correct Answer: Option D

Explanation:
Net change = x^2 / 100 % decrease. 20^2 / 100 = 400 / 100 = 4% decrease.

This question belongs to: Maths Percentage

Question #2

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What is 33.33% of 99?

A. 66

B. 99

C. 11

D. 33

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Correct Answer: Option D

Explanation:
33.33% is equivalent to the fraction 1/3. (1/3) * 99 = 33.

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Question #3

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A man spends 30% on rent, 20% of the remainder on food, and 25% of the next remainder on education. If he saves Rs. 5460, find his monthly income.

A. Rs. 13500

B. Rs. 13000

C. Rs. 12500

D. Rs. 12000

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Correct Answer: Option B

Explanation:
Rent 30%, left 70%. Food 20% of 70%=14% of income, left 56%. Education 25% of 56%=14% of income, left 42% = 5460 → income = 5460/0.42 = 13000.

This question belongs to: Maths Percentage

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