Answer:
9 gallon of gas
Step-by-step explanation:
When distance covered is 378 miles, they have used 14 gallons of gas
We need to find how much gas will they need to finish the trip if 243 miles left to drive on the trip.
378 miles = 14 gallons of gas
For 1 mile,
1 gallon of gas is used for 
For 243 miles,

Hence, for 243 miles 9 gallon of gas is used.
I hope this is the answer:)
3x-x+2=4
sorry... this answer is VERY wrong
The one that makes most sense is the last one, but I would define it as "Two times some number divided by 4".
The LCM of 24 and 72 is 72 :)