A boy scored 85% marks out of 400. How many marks did he get? MCQ with Answer and Explanation

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A boy scored 85% marks out of 400. How many marks did he get?

A. 320

B. 340

C. 350

D. 330

Answer: Option B

Solution (By JKSSB Mock Tests)

85% of 400 = 340.

This question belongs to: Maths Percentage

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Question #1

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A student scored 45% marks in the first paper and 55% in the second paper. If the maximum marks in each paper are equal and he scored 250 marks in total, what are the maximum marks of each paper?

A. 275

B. 225

C. 200

D. 250

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Correct Answer: Option D

Explanation:
Let max per paper = M. 0.45M + 0.55M = 1.0M = 250 → M = 250.

This question belongs to: Maths Percentage

Question #2

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If the length of a rectangle is increased by 20% and the breadth is decreased by 10%, what is the percentage change in area?

A. 6% increase

B. 10% increase

C. 8% increase

D. 12% increase

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Correct Answer: Option C

Explanation:
1.2 × 0.9 = 1.08, 8% increase.

This question belongs to: Maths Percentage

Question #3

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A's salary 15% less than B's. By what % must A's salary be raised to equal B's?

A. 17.65%

B. 15%

C. 18%

D. 16.67%

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Correct Answer: Option A

Explanation:
A=85, B=100. Increase needed = (15/85)×100 ≈ 17.65%.

This question belongs to: Maths Percentage

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