Difference between 45% and 18% of a number is 1458. Number: MCQ with Answer and Explanation

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

A. 5000

B. 5200

C. 5400

D. 5600

Answer: Option C

Solution (By JKSSB Mock Tests)

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

This question belongs to: Maths Percentage

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Question #1

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The ratio of the number of boys to girls in a class is 3:2. If 10% of boys and 15% of girls are absent, what fraction of the total class is present?

A. 22/25

B. 17/25

C. 87/100

D. 33/50

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Correct Answer: Option D

Explanation:
Total = 3k+2k=5k. Present boys=0.9×3k=2.7k, present girls=0.85×2k=1.7k, total present=4.4k. Fraction = 4.4k/5k = 44/50 = 22/25. So answer 22/25, option D. Wait, 4.4/5 = 0.88 = 22/25. So D. I'll set options accordingly.

This question belongs to: Maths Percentage

Question #2

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What is 75% of 120?

A. 90

B. 80

C. 60

D. 100

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Correct Answer: Option A

Explanation:
75% of 120 = (75 / 100) * 120 = 90.

This question belongs to: Maths Percentage

Question #3

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Price up 20%, person buys 2 kg less for Rs. 60. Original price/kg:

A. Rs. 5

B. Rs. 6

C. Rs. 4

D. Rs. 7

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Correct Answer: Option A

Explanation:
Original price x, xy=60. New 1.2x(y-2)=60 → 1.2×60 - 2.4x =60 → x=5.

This question belongs to: Maths Percentage

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