Answer:
31.6 miles per gallon
Step-by-step explanation:
Given that:
Miles driven = 39 1/2 miles
Gallons of gasoline used = 1 1/4 gallons
The unit rate for miles per gallon :
Total miles driven / gallons of gasoline used
39 1/2 ÷ 1 1/4
79/2 ÷ 5/4
79 /2 * 4/5
(79 * 4) / 10
316 / 10
= 31.6 miles per gallon
