Question

in a hostel, 75 students had food provision for 24 days. if 15 students leaves the hostel, for how many days would the food provision last?

Answer 1

If 15 students leaves the hostel then total students (75-15)=60
now,
75 students had food provision for 24 days
1 student had food provision for 24×75 days
60 student had food provision for(24×75)/60=30 days