20% of 50 + 30% of 60 equals: MCQ with Answer and Explanation

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20% of 50 + 30% of 60 equals:

A. 30

B. 28

C. 32

D. 34

Answer: Option B

Solution (By JKSSB Mock Tests)

20% of 50 = 10, 30% of 60 = 18, sum = 28.

This question belongs to: Maths Percentage

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Question #1

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The population of a town is 120000. It increases by 15% in the first year and decreases by 10% in the second year. What is the population after two years?

A. 124200

B. 123000

C. 126500

D. 125000

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Correct Answer: Option A

Explanation:
120000 × 1.15 × 0.9 = 124200.

This question belongs to: Maths Percentage

Question #2

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A number is increased by 50% and then decreased by 50%. The net change is:

A. 25% increase

B. No change

C. 25% decrease

D. 50% decrease

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Correct Answer: Option C

Explanation:
1.5 × 0.5 = 0.75, 25% decrease.

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Question #3

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0.04 as percent is:

A. 0.4%

B. 0.04%

C. 4%

D. 40%

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Correct Answer: Option C

Explanation:
0.04 × 100 = 4%.

This question belongs to: Maths Percentage

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