Question

You plan on taking a 1170 mile long trip in your car, which average 19.5 miles per gallon. About how many gallons of gas will you use? If gas costs 2.85 dollars per gallon, how much do you expect to spend on gas?

Answer 1

171 dollar because 1170 divde by 19.5 is 60 times 2.85 is 171

Answer 2

Divide this problem into two parts:
1) Find the # of gallons of gas that will be used
2) Find the cost of this gas

1)  
1170 miles
--------------- = 60 gallons (answer to Part 1)
 19.5 mpg

2) (60 gallons)($2.85/gallon) = $171 (answer to Part 2)