A hostel had provisions for 250 men for 40 days. If 50 men left the hostel, how long will the food last at the same rate?

• ans is 50 days.
  let amount of food be x for 250 men for 40 days.
  food consumed per men per day = (x/(250*40))
  
  A/Q
  
  => (x/(250*40)*(200*y)) = x {where y is required no of days}
  
  after solving y = 50
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