The price of an article is reduced by 20% and then increased by 30%. Find the net change in the price. MCQ with Answer and Explanation

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The price of an article is reduced by 20% and then increased by 30%. Find the net change in the price.

A. 4% increase

B. 10% increase

C. No change

D. 4% decrease

Answer: Option A

Solution (By JKSSB Mock Tests)

0.8 × 1.3 = 1.04, 4% increase.

This question belongs to: Maths Percentage

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Question #1

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A can do a piece of work in 20 days. B is 25% more efficient than A. How many days will B alone take to do the work?

A. 16 days

B. 18 days

C. 14 days

D. 15 days

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Correct Answer: Option A

Explanation:
Efficiency ratio A:B = 100:125 = 4:5. Time ratio = 5:4. B's time = (4/5)×20 = 16 days.

This question belongs to: Maths Percentage

Question #2

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Price of a commodity falls by 20%. To keep expenditure constant, consumption must increase by:

A. 30%

B. 25%

C. 15%

D. 20%

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Correct Answer: Option B

Explanation:
New price 0.8, consumption multiplier needed = 1/0.8 = 1.25, increase 25%.

This question belongs to: Maths Percentage

Question #3

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After spending 85% of his income, a man saves Rs. 4500. His income is:

A. 25000

B. 30000

C. 28000

D. 32000

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Correct Answer: Option B

Explanation:
Savings 15% = 4500, income = 4500/0.15 = 30000.

This question belongs to: Maths Percentage

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