Selected MCQ

Current Question
In a fort, food lasts 2 months. After half a month, more people join. How long will food last?
  • A. 1.5 months
  • B. 40 days
  • C. 2 months
  • D. 50 days
Correct Answer: D
Explanation:
Adjusting the rate gives 50 days.
Related Question 1
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 2
Rs. 725 is lent at a certain rate. After 8 months, Rs. 362.50 more is lent at double the rate. Find the rate.
  • A. 3.46%
  • B. 4.5%
  • C. 5%
  • D. 6%
Correct Answer: A
Explanation:
Equating interests gives a rate ≈ 3.46%.
Related Question 3
A and B invest Rs. 8000 each. After 4 months, B withdraws half. Find the profit ratio.
  • A. 18:11
  • B. 22:13
  • C. 23:12
  • D. 11:9
Correct Answer: A
Explanation:
Time-weighted capital gives a ratio of 18:11.
Related Question 4
In a hostel, food for 1200 boarders lasts one month. If borders are reduced, how long will it last?
  • A. 20 days
  • B. 30 days
  • C. 35 days
  • D. 50 days
Correct Answer: B
Explanation:
With the same number, duration remains unchanged at 30 days.
Related Question 5
Food lasts for a certain number of men. After some leave, how long will it last?
  • A. 20 days
  • B. 25 days
  • C. 18 days
  • D. 16 days
Correct Answer: A
Explanation:
Inverse proportion.