Solve.
-The amount of water used to take a shower is directly proportional to the amount of time that the shower is in use. A shower lasting 15 minutes requires 7.5 gallons of water. Find the amount of water used in a shower
Lasting 8 minutes.
A) 120 gallons
B) 3.5 gallons
C) 4 gallons
D) 4.5 gallons

Question

Quizplus · Accepted Answer

The amount of water used is directly proportional to the amount of time that the shower is in use. So, the ratio of water used to time is constant.For a shower lasting 15 minutes, the ratio is 7.5 gallons / 15 minutes = 0.5 gallons / minute.For a shower lasting 8 minutes, the amount of water used is 0.5 gallons / minute * 8 minutes = 4 gallons.

Solve. -The Amount of Water Used to Take a Shower Is