It would cost 309 miles ÷ 21 mpg x cost_of_a_gallon_of_fuel
= 145/7 x cost_of_a_gallon_of_fuel
The last time I filled up with diesel it cost me 145.9p per litre, meaning 1 gallon cost approx 663.3p meaning it would have cost me:
£97.60 to drive 309 miles at 21 mpg
The cost of gas to drive 2,128 would vary greatly on the mileage the vehicle to be driven gets. If it gets 20 miles to the gallon it would take 106.4 gallons of gas.
The answer will depend on the cost of a gallon.
13.27
It would cost about $350.
$26.60
over $600.
$93.06
Driving 340 miles in a vehicle that gets 20 mpg and where gas costs $3.15/gallon would cost $53.55
190/30=6.3333 gallons times unknown cost
$65.53
$854.00
1435 divided by 30 = 47.83 gallons.