Question 904434
Angelo drove 225 miles using 10.7 gallons of gas. 
So we at first find out how many miles can he travel in 
1 gallon of gas: total number of miles divided by gallon of gas: 225/10.7=21.0280378 miles in 1 gallon of gas.
So using 9 gallons he can travel a distance of:
9*21.0280378=189.2523364 miles in 9 gallons.
(* means multiplication)