A student got 360 marks out of 500. Percentage is: MCQ with Answer and Explanation

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A student got 360 marks out of 500. Percentage is:

A. 72%

B. 75%

C. 68%

D. 70%

Answer: Option A

Solution (By JKSSB Mock Tests)

(360/500)×100 = 72%.

This question belongs to: Maths Percentage

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Question #1

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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. 8

C. 12

D. 10

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Correct Answer: Option D

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

This question belongs to: Maths Percentage

Question #2

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A and B can do a work in 12 days. B and C in 15 days. A and C in 20 days. If A, B, and C work together, how long will they take?

A. 8 days

B. 10 days

C. 9 days

D. 11 days

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Correct Answer: Option B

Explanation:
2(A+B+C) = 1/12 + 1/15 + 1/20 = (5+4+3)/60 = 12/60 = 1/5 → A+B+C = 1/10. Together 10 days.

This question belongs to: Maths Percentage

Question #3

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A number is 30% of another number. If the sum of the numbers is 390, find the larger number.

A. 270

B. 300

C. 250

D. 260

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Correct Answer: Option B

Explanation:
Let larger x, smaller 0.3x. 1.3x = 390 → x=300.

This question belongs to: Maths Percentage

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