A dishonest dealer uses a scale of 90 cm instead of a metre scale and claims to sell at cost price. His gain percent is: MCQ with Answer and Explanation

Question

A dishonest dealer uses a scale of 90 cm instead of a metre scale and claims to sell at cost price. His gain percent is:

A. 10%

B. 9%

C. 11.11%

D. 11%

Answer: Option C

Solution (By JKSSB Mock Tests)

Profit = (10/90)×100 ≈ 11.11%.

This question belongs to: Maths Percentage

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Question #1

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The present ages of A and B are in the ratio 6:7. After 8 years, the ratio of their ages will be 8:9. Find the sum of their present ages.

A. 48 years

B. 56 years

C. 60 years

D. 52 years

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Correct Answer: Option D

Explanation:
Ages 6x,7x. (6x+8)/(7x+8)=8/9 → 54x+72=56x+64 → 2x=8 → x=4. Sum=6x+7x=13x=52.

This question belongs to: Maths Percentage

Question #2

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In a bag, 60% are red balls, 30% are blue balls, and the rest are green balls. If 5% of red, 10% of blue, and 20% of green balls are defective, what percent of the total balls are defective?

A. 7%

B. 8%

C. 7.5%

D. 8.5%

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Correct Answer: Option B

Explanation:
Red=60, Blue=30, Green=10. Defective: Red 0.05×60=3, Blue 0.1×30=3, Green 0.2×10=2. Total defective=8%. So answer 8%.

This question belongs to: Maths Percentage

Question #3

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A's income is 30% more than B's, B's is 20% more than C's. A's income is what percent more than C's?

A. 52%

B. 56%

C. 60%

D. 50%

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Correct Answer: Option B

Explanation:
C=100, B=120, A=120×1.3=156, so A is 56% more than C.

This question belongs to: Maths Percentage

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