The price of a product increases by 20%, and then again by 20%. What is the net percentage increase? MCQ with Answer and Explanation

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The price of a product increases by 20%, and then again by 20%. What is the net percentage increase?

A. 48%

B. 40%

C. 44%

D. 42%

Answer: Option C

Solution (By JKSSB Mock Tests)

Successive percentage formula: 20 + 20 + (20 * 20 / 100) = 40 + 4 = 44%.

This question belongs to: Maths Percentage

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Question #1

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A town's population was 100,000 and is now 121,000. If the annual increase is 10%, in how many years did this increase occur?

A. 1

B. 2

C. 3

D. 4

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Correct Answer: Option B

Explanation:
121000 = 100000 * (1.10)^t. 1.21 = (1.10)^t. Since 1.10^2 = 1.21, t = 2 years.

This question belongs to: Maths Percentage

Question #2

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80% passed English, 70% Maths, 60% both. % failed both:

A. 10%

B. 20%

C. 5%

D. 15%

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Correct Answer: Option A

Explanation:
Pass at least one = 80+70-60=90%, fail both = 10%.

This question belongs to: Maths Percentage

Question #3

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In an election, a candidate got 55% of the total votes and won by 500 votes. Find the total number of votes cast.

A. 5000

B. 5500

C. 4000

D. 4500

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Correct Answer: Option A

Explanation:
Winner = 55%, Loser = 45%. Difference = 10%. 10% of Total = 500. Total = 5000.

This question belongs to: Maths Percentage

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