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 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

step-by-step explanation:

the multiplicative inverse of a fraction a/b is b/a. for the multiplicative inverse of a real number, divide 1 by the number. for example, the reciprocal of 5 is one fifth 1/5 or 0.2, and the reciprocal of 0.25 is 1 divided by 0.25, or 4.