Answer :
The cost of gas to travel 1200 miles is $183.33. The gas required to travel 500 miles is 27.8 gallons, 700 miles is 38.9 gallons and to travel for 5 hours is 275 miles.
Miles per gallon provides the number of miles a car can travel on one gallon of gas. Hence, to travel 1200-mile trip, the number gallons of gas used is given by:
Number of gallons = Total distance travelled/ Miles per gallon
When the total distance travelled = 1200 miles
Number of gallons = 1200/18 = 66.7 gallons
At $2.75 per gallon, the total cost of gas = 66.7*2.75 = $183.33
When the total distance travelled = 500 miles
Number of gallons = 500/18 = 27.8 gallons
When the total distance travelled = 700 miles
Number of gallons = 700/18 = 38.9 gallons
If the car is travelling at 55 miles per hour
Total distance travelled in 5 hours = 55*5 = 275 miles
When the total distance travelled = 275 miles
Number of gallons = 275/18 = 15.3 gallons
Note: The question is incomplete. The complete question probably is: If a car travels at 18 miles per gallon and price per gallon of gas is $2.75. How much will gas cost for a 1200 mile trip?; How much gas does it take to drive 500 miles?; How many gallons do you need to go 700 miles?; If the car travels at 55 miles/hour, how much gas does it take to drive 5 hours?
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