If 15% of x is the same as 20% of y, then x:y is: MCQ with Answer and Explanation

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If 15% of x is the same as 20% of y, then x:y is:

A. 3:4

B. 3:5

C. 5:3

D. 4:3

Answer: Option D

Solution (By JKSSB Mock Tests)

0.15x = 0.2y → x/y = 0.2/0.15 = 4/3 → 4:3.

This question belongs to: Maths Percentage

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Question #1

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Price reduced 25%, enables buying 3 kg more for Rs. 90. Reduced price/kg:

A. Rs. 7

B. Rs. 6

C. Rs. 8

D. Rs. 7.5

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Correct Answer: Option D

Explanation:
Original price x, xy=90. New 0.75x(y+3)=90 → 0.75×90 + 2.25x=90 → x=10, reduced 7.5.

This question belongs to: Maths Percentage

Question #2

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Population of a town is 1,32,300 now. Increased 5% annually. Population 2 years ago:

A. 1,22,000

B. 1,18,000

C. 1,20,000

D. 1,15,000

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Correct Answer: Option C

Explanation:
Pop 2 years ago = 132300 / (1.05)² = 132300 / 1.1025 = 1,20,000.

This question belongs to: Maths Percentage

Question #3

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Difference between SP at 12% profit and 8% loss is Rs. 60. CP:

A. 250

B. 280

C. 300

D. 320

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Correct Answer: Option C

Explanation:
1.12CP - 0.92CP = 0.2CP = 60 → CP = 300.

This question belongs to: Maths Percentage

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