Question

a group of 60 soldiers has provision for 60 days. how long would the provision last if there are 80 soldiers

Answer 1

Answer:

i think it would be 80 days

Answer 2

The provisions would last 45 days.

We know that since the number of soldiers has increased, the number of days the provisions would last must decrease.

60 is 0.75 of 80 (60/80=0.75)

The change in number of soldiers is proportional to the change in days. We multiply 60 by 0.75 to find that the provisions would last 45 days.

Alternatively you could do 80/60=1.333 and 60/1.333=45