A truck owner will refuel his vehicle at a rate of 2 gallons of diesel fuel every 5 seconds. If diesel fuel costs $ 1.0 per gallon, how long will it take for the truck owner to refuel his vehicle with $ 40 worth of diesel fuel?  Answers:
A) 20 seconds	B) 1 minute	C) 1 minute 40 seconds	D) 20 minutes	E) 1 hour 20 minutes
2 gal / 5 sec   $1.25 / gal   $40/$1.25 = 40 gal   2 gal / 5 sec with 40 gal = 100 sec   C. 1 minute 40 seconds
<result>C</result>
A truck owner will refuel his vehicle at a rate of 2 gallons of diesel fuel every 5 seconds. If diesel fuel costs $ 1.0 per gallon, how long will it take for the truck owner to refuel his vehicle with $ 40 worth of diesel fuel?