Question

Annies car used 100 cups of gasoline during a drive he paid $3.12 per gallon for gas. how much did the gas cost ?

Answer 1

16 cups = 1 gallon....so 100 cups = 100/16 = 6.25 gallons

at 3.12 per gallon = (6.25 * 3.12) = $ 19.50 <===

Answer 2

The gas would have cost $19.50. Hope this helps :)