Selected MCQ

Current Question
A petrol tank lasts 10 days. If consumption patterns change, how long will it last?
  • A. 5 days
  • B. 6 days
  • C. 7 days
  • D. 8 days
Correct Answer: D
Explanation:
Adjusting the consumption rate leads to a duration of 8 days.
Related Question 1
If food for 600 men lasts 30 days, how long for 1000 men?
  • A. 20 days
  • B. 18 days
  • C. 28 days
  • D. 36 days
Correct Answer: B
Explanation:
(600×30)/1000 = 18 days.
Related Question 2
If food for 1200 men lasts 10 days, how long will it last for 1000 men?
  • A. 15
  • B. 12
  • C. 10
  • D. 20
Correct Answer: B
Explanation:
Inverse proportion gives 12 days.
Related Question 3
In a camp, food for 500 men lasts 10 days. After 5 days, 200 more men joined. How long will the remaining food last?
  • A. 3 days
  • B. 8 days
  • C. 5 days
  • D. 1 day
Correct Answer: D
Explanation:
Remaining food consumed faster → lasts 1 day.
Related Question 4
The price of petrol has increased by 25%. By what percent should consumption be reduced to keep expenditure constant?
  • A. 25%
  • B. 30%
  • C. 50%
  • D. 20%
Correct Answer: D
Explanation:
Reduction = 25/125 ×100 = 20%.
Related Question 5
In a ship, food for 800 men lasts 50 days. For 1000 men, it lasts ____.
  • A. 40
  • B. 50
  • C. 30
  • D. 56
Correct Answer: A
Explanation:
Inverse proportion gives 40 days.