Exercise 7 Page 881

A soccer team brings a 4.5-gallon cooler of water. We want to find out how many 4-ounce cups the team can drink per game. Therefore, we need to start by converting between liquid gallons (gal) and liquid ounces (oz). This will involve using a conversion factor. 128oz/1galMultiplying 4.5 gallons by this conversion factor will convert it to ounces.

4.5gal*128oz/1gal

MoveLeftFacToNum

a*b/c= a* b/c

4.5gal* 128oz/1gal

CrossCommonFac

Cross out common factors

4.5gal* 128oz/1gal

SimpQuot

Simplify quotient

4.5* 128oz/1

DivByOne

a/1=a

4.5* 128oz

Multiply

Multiply

576oz

In order to find out how many 4-ounce cups the team can drink per game, we need to divide the whole 576 oz of water the team brought by the volume of one 4-oz cup. This will give us the number of cups the team can drink per game.

576 oz/4oz

CancelCommonFac

Cancel out common factors

576 oz/4 oz

SimpQuot

Simplify quotient

576/4

CalcQuot

Calculate quotient

144

The team can drink 144 cups of water per game.