Answer:
15 gallons
252 miles.
Step-by-step explanation:
112 miles divided by 4 gallons is 28 miles per gallon and 182 miles divided by 6.5 gallons is 28 miles per gallon. So with 420 miles at 28 miles per gallon is 15 gallons. (420/28=15) Second step you would multiply 9 gallons by 28 miles per gallon (9X28=252)