Question

in a hostel ,300 students had provisions for 90 days after 20 days ,50 student left the hostel. how long would the food last ​?

Answer 1

300 students had provisions for 90 days.

For 1 student, it will last for 90 * 300 days.

Food required for 300 men for 20 days,

= 90 * 300 - 300 * 20

= 21000.

Given,

50 men left after 20 days.

∴ Number of men remaining = 300 - 50 = 250.

∴ Remaining food last for:

= 21000/250

= 84 days

Hope it helps!