A's marks 30% more than B, B's 20% less than C. A=156, C's marks: MCQ with Answer and Explanation

A's marks 30% more than B, B's 20% less than C. A=156, C's marks:

A. 140

B. 130

C. 150

D. 160

Answer: Option C

A=1.3B, B=0.8C → A=1.04C → C=156/1.04=150.

This question belongs to: Maths Percentage

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Question #1 Report Error

A person spends 10% of his salary on transport and 20% of the remaining on food. If he saves Rs. 3600, what is his total salary?

A. 4000

B. 4500

C. 5000

D. 6000

Correct Answer: Option C

Explanation:
Let total salary = x. x * (90/100) * (80/100) = 3600. 0.72x = 3600. x = 5000.

This question belongs to: Maths Percentage

Question #2 Report Error

Exam: 10% ineligible, 60% of eligible males. 4320 males, total candidates:

A. 7200

B. 7000

C. 8000

D. 7500

Correct Answer: Option C

Explanation:
Eligible = 0.9T, males = 0.6×0.9T = 0.54T = 4320 → T = 4320/0.54 = 8000.

This question belongs to: Maths Percentage

Question #3 Report Error

A town's population increases by 10% in the first year and 20% in the second year. What is the net percentage increase?

A. 35%

B. 33%

C. 30%

D. 32%

Correct Answer: Option D

Explanation:
Net change = 10 + 20 + ((10 * 20) / 100) = 30 + 2 = 32%.

This question belongs to: Maths Percentage