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

Question

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20% of 50 + 30% of 60 equals:

A. 32

B. 34

C. 30

D. 28

Answer: Option D

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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Gave 20% to wife, 25% of remainder to son, rest to daughter. Daughter got Rs. 6000, total:

A. 15000

B. 12000

C. 10000

D. 8000

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Correct Answer: Option C

Explanation:
Wife 20%, left 80%, son 25% of 80%=20%, daughter 60%=6000 → total=10000.

This question belongs to: Maths Percentage

Question #2

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0.5% of 2000 is:

A. 20

B. 15

C. 10

D. 5

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Correct Answer: Option C

Explanation:
0.005 × 2000 = 10.

This question belongs to: Maths Percentage

Question #3

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The price of an article is increased by r% and then decreased by r%. If the net decrease is 1%, find r.

A. 5

B. 10

C. 8

D. 12

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Correct Answer: Option B

Explanation:
1 - r²/10000 = 0.99 → r² = 100 → r = 10.

This question belongs to: Maths Percentage

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