Answer :
1 Gallon = 25 miles
for 150 miles ====> 150/25 = 6 Gallons
each gallon = $3
6 gallons = 6 x 3 = $18
for 150 miles ====> 150/25 = 6 Gallons
each gallon = $3
6 gallons = 6 x 3 = $18