If x% of 300 = 45, then x is: MCQ with Answer and Explanation

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If x% of 300 = 45, then x is:

A. 10

B. 18

C. 12

D. 15

Answer: Option D

Solution (By JKSSB Mock Tests)

300 × x/100 = 45 → 3x = 45 → x = 15.

This question belongs to: Maths Percentage

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Question #1

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In an examination, 70% passed in English and 60% passed in Maths. If 15% failed in both and 450 passed in both, find the total number of students.

A. 1000

B. 800

C. 900

D. 1100

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Correct Answer: Option A

Explanation:
Failed Eng=30%, Maths=40%. Passed both = 100 - (30+40-15) = 45%. 45% = 450 → total = 1000.

This question belongs to: Maths Percentage

Question #2

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Difference between 45% and 18% of a number is 1458. Number:

A. 5600

B. 5000

C. 5200

D. 5400

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Correct Answer: Option D

Explanation:
27% of x = 1458 → x = 1458/0.27 = 5400.

This question belongs to: Maths Percentage

Question #3

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35 is what percent of 140?

A. 25%

B. 22.5%

C. 20%

D. 30%

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Correct Answer: Option A

Explanation:
(35/140)×100 = 25%.

This question belongs to: Maths Percentage

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