Jack can make 6 paper boat canoes in 15 minutes. At that rate, how many paper boat canoes can he make in 40 minutes?

A. 120

B. 20

C. 16

D. 100

The correct answer for the question above is

C.) 16

The answer is C-16

This is because if your set up a proportion

--=- - you put 6 over 15 like a fraction form and then = x over 40 x because you don't know how many he can make in 40 mins and the 40 is right next to the 6 over 15 because we are trying to find how many paper boats we can make not the time therefore the answer is 16