Question

Ration is available for 75 students in a hostel for 20 days. How long will it last for the remaining students if 25 Students left the hostel after 10 days?​

Answer 1

Let total ration be x

Ration end by 1student in 1day = 1/(20×75 )

=1/1500 x

so ration consumed by 75students in 10days = 1/2x

And ration left = 1/2x

so ration consumed by 25 students in 1day = (1/1500x)×25

The ration will end in

(1/2x)/(25/1500x)

=30 days