Question

A fort had enough food for 80 soldiers for 60 days. How long would the food last if 20 more soldiers join after 15 days?

Answer 1

Answer:

Step-by-step explanation:

This is a case of inverse variation.

Let the no. of days left be X.

So, 80*(60-15)= (80+20)*X

or, 80*45= 100*X

or, 3600/100=X.

or, 36=X

Thus, the answer is 36 days