The volume of a box(V) varies directly with its length(l). If a box in the group has a length of 25 inches and k = 15, what is its volume?


375 cubic inches

455 cubic inches

1 2/3 cubic inches

Verified Answer :

The problem says that V(x)
varies directly with its length. This is a proportionality problem. So, V(x) =
kl. If you are given a length of 25 inches and a k (proportionality constant)
of 15, you are required to find its volume V(x).



V(x) = kl


V(x) = (15) (25 inches)

V(x) = 375 cubic inches



The volume of the box is 375
cubic inches.