A garrison has provisions for 40 days. At the end of 5 days half of the men left the garrison. How long the food will last for?
Correct answer: C. 70 days
- A. 45 days
- B. 35 days
- C. 70 days
- D. 80 days
Explanation
After 5 days, the food has 40 - 5 = 35 days of provision remaining for the original number of men. When half the men leave, half as many men consume the food, so the remaining duration doubles: 35 x 2 = 70 days. The likely mistaken answer is 45 days, which adds the first 5 days instead of calculating the remaining duration after the men leave.
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