How much money is one mile

Question

My car gets 28 miles per gallon, and gasoline costs $2.40 per gallon. If we consider only the cost of gasoline, how much does it cost (in dollars) to drive each mile? Round your answer to the nearest cent.

$ _____ per mile?

Answer 1

9 cents per mile

$0.09 rounded off to nearest cent

divide 2.4 by 28 = 2.4/28 = .6/7 = 6/70 = 0.0857 = about 0.09 dollars = 9 cents

drive 28 miles at 9 cents a mile = $2.52

drive 28 miles at 8 cents a mile = $2.24 $2.40 is within 12 cents of 2.52, and within 16 cents of 2.24

so go with 9 cents if you want to round it off