Question

In A hostel,75 students had food provision for 24 days.If 15 students leave the hostel,for how many days would the food provision last?

Answer 1

This is inverse proportion =x1:x2::y2:y1
75:60::y:24
60y=75×24
60y=1800
y=30

Ans:30 days

Answer 2

$75 \times 24 = 1800 \\ 1800 \div 15 = 30$