A school has stock of food for $200$ students for $45$ days. If $50$ students leave the hostel, the stock…

A school has stock of food for $200$ students for $45$ days. If $50$ students leave the hostel, the stock will last:
  1. $50$ days
  2. $54$ days
  3. $60$ days
  4. $72$ days

Solution

$200 \times 45 = 150 \times d \Rightarrow d = \dfrac{9000}{150} = 60$ days.

Asked in: IMO

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