In a hostel having 80 students, there are food provisions for 30 days. After 10 days some students left for their home and thus lasted for another 25 days. How many students left the hostel ?
Answer & explanation
Correct answer: option 3
Total students = 80
Food available for = 30 days
Then the total quantity of food = 80 × 30 = 2400
After 10 days some students left now the quantity of food that is remains = 2400 - 80 × 10 = 1600
Let x students left then the remaining students = 80-x
So, now the food is for 25 days,
according to the question,
(80-x) × 25 = 1600
x = 16