Harold filled his swimming pool over the weekend. The pool has a capacity of 540 gallons. Harold put in 180 gallons of water on Saturday. The garden hose that Harold used supplies 9 gallons of water per minute. How long did it take for Harold to fill the pool to capacity on Sunday? Define a variable for the unknown quantity. Write and solve an equation to answer the question. Let m= the number of
a.) gallons in the pool on Sunday
b.) Minutes to fill the pool on Saturday
c.) gallons the garden hose puts in the pool on Sunday
d.) minutes to fill the pool on Sunday

An equation to represent the situation is =540.
a.) m+89
b.) 189m
c.) 9m+180
d.) 180m+9

So, m= . It took Harold minutes to fill the pool to capacity on Sunday.