Question

In a hostel of 50 girls, there are food provisions for 40 days. If 30 more girls join the hostel, how long will these provisions last?

Answer 1

Let the number of days is x

Total number of girls = 50 + 30 = 80

Girls	50	80
Time(days)	40	x

50 x 40 = 80 x x

x = \(\frac{50\times 40}{80}\) = 25

Therefore the number of days the food will last is 25 days