Victor needs to calculate the number of miles per gallon his car averages. His car's gas tanks holds 15 gallons of gas. Write an equation that will help him determine the average number of miles per gallon. Let's let x= number of miles traveled, and y= average miles per gallon. I thought that it was 15y=x
you are correct. Keeping the units around can help with this kind of problem.
15 gal * y mi/gal = x mi
Note that the gal units cancel, leaving mi on both sides of the equation. If the units agree at the end, chances are good that your calculations are correct.
-5x-12<13 or -6x+8>50
In your car You travel 390 miles on 15 gallons of gas at that rate how far can you travel on 25 gallons of gas
You're on the right track! To calculate the average number of miles per gallon, you need to divide the total number of miles traveled by the number of gallons of gas consumed. In this case, the total number of miles traveled is represented by "x" and the average miles per gallon is represented by "y." Since the gas tank holds 15 gallons of gas, the equation to determine the average miles per gallon would be:
y = x/15
This equation divides the number of miles traveled, represented by "x," by the number of gallons of gas consumed, which is 15 gallons in this case, to find the average miles per gallon, represented by "y."