18 is what percentage of 120? MCQ with Answer and Explanation

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18 is what percentage of 120?

A. 15%

B. 18%

C. 20%

D. 12%

Answer: Option A

Solution (By JKSSB Mock Tests)

(18 / 120) * 100% = (3 / 20) * 100% = 15%.

This question belongs to: Maths Percentage

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Question #1

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Find the single equivalent discount for successive discounts of 50% and 50%.

A. 100%

B. 50%

C. 75%

D. 80%

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Correct Answer: Option C

Explanation:
Equivalent discount = 50 + 50 - (50 * 50 / 100) = 100 - 25 = 75%.

This question belongs to: Maths Percentage

Question #2

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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. 18%

B. 15%

C. 17.65%

D. 16.67%

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Correct Answer: Option C

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

This question belongs to: Maths Percentage

Question #3

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If 20% of a number is added to another number, the second number increases by 50%. What is the ratio of the first number to the second number?

A. 2:1

B. 5:2

C. 2:5

D. 1:2

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Correct Answer: Option B

Explanation:
Let first = x, second = y. 0.2x + y = 1.5y → 0.2x = 0.5y → x/y = 0.5/0.2 = 5/2. Ratio = 5:2.

This question belongs to: Maths Percentage

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