What is 45% of 200 minus 20% of 150? MCQ with Answer and Explanation

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What is 45% of 200 minus 20% of 150?

A. 50

B. 65

C. 55

D. 60

Answer: Option D

Solution (By JKSSB Mock Tests)

90 - 30 = 60.

This question belongs to: Maths Percentage

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Question #1

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A dishonest shopkeeper uses 800 g weight instead of 1 kg. His profit %:

A. 25%

B. 20%

C. 22.5%

D. 30%

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Correct Answer: Option A

Explanation:
Profit = (200/800)×100 = 25%.

This question belongs to: Maths Percentage

Question #2

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A train running at the speed of 72 kmph crosses a pole in 12 seconds. Find the length of the train.

A. 200 m

B. 260 m

C. 240 m

D. 220 m

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Correct Answer: Option C

Explanation:
Speed = 72 × 5/18 = 20 m/s. Length = 20×12 = 240 m.

This question belongs to: Maths Percentage

Question #3

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A number is erroneously multiplied by 4/3 instead of 3/4. Percentage error in calculation:

A. 66.67%

B. 80%

C. 75%

D. 77.78%

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Correct Answer: Option D

Explanation:
Correct = (3/4)x, wrong = (4/3)x. % error = [(4/3 - 3/4)/(3/4)]×100 = (7/9)×100 ≈ 77.78%.

This question belongs to: Maths Percentage

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