45% read newspaper A, 55% read B, 15% both. % read neither: MCQ with Answer and Explanation

45% read newspaper A, 55% read B, 15% both. % read neither:

A. 25%

B. 30%

C. 20%

D. 15%

Answer: Option D

At least one = 45+55-15=85%, neither = 15%.

This question belongs to: Maths Percentage

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Question #1 Report Error

Petrol price increased from Rs. 80 to Rs. 96 per litre. Increase percent is:

A. 18%

B. 25%

C. 16%

D. 20%

Correct Answer: Option D

Explanation:
Increase = 16, (16/80)×100 = 20%.

This question belongs to: Maths Percentage

Question #2 Report Error

In a college, 40% are girls. 50% of the boys and 60% of the girls passed an exam. If 460 students failed, find the total number of students.

A. 900

B. 800

C. 1100

D. 1000

Correct Answer: Option D

Explanation:
Total T. Boys=0.6T, girls=0.4T. Passed=0.5×0.6T+0.6×0.4T=0.3T+0.24T=0.54T. Failed=0.46T=460 → T=1000.

This question belongs to: Maths Percentage

Question #3 Report Error

Kerosene price up 25%. To keep expenditure same, reduce consumption by:

A. 15%

B. 18%

C. 25%

D. 20%

Correct Answer: Option D

Explanation:
Reduction = (25/125)×100 = 20%.

This question belongs to: Maths Percentage