Question

A fort has rations for 180 soldiers for 40 days. After 10 days,30 soldiers leave the fort. Find the total number of days for which the food will last.

Answer 1

let each soldiers eat x food in each day..

so total amount of food = 180×40×x

remaining amount of food = 180×30×x

amount of food 150 soldiers can eat in 1 day=

= 180×30×x/150

=36x

now no of days =36x/x
=36 days

so