Math question

Question

two families are each driving 825 miles in two different cars. the romano family car gets an average of 33 miles per gallon and thr sanlin family car gets an average of 25 miles per gallon. if gas cost $4 per gallon, how much more will the sanlin family spend for gas?

Answer 1

I'll show you how to set one of these up and you can do the next. Set it up for the Sanlin family,

825 miles x 1 gallon/25 miles x $4 /gallon. Note that the miles units and gallon units cross out, so you are left with dollars. 825/25 = 33 gallons, x $4 per gallon, the cost is $132. So set up the other equation for the Romano family the same way. Then subtract to find the difference in total cost.