A particular hybrid car travels approximately 129 mi on 3 gal of gas. Find the amount of gas required for a 688-mi trip.
To find the amount of gas required for a 688-mi trip, we need to set up a proportion.
The amount of gas required for a 129-mi trip is 3 gal.
So, the amount of gas required for a 1-mi trip is 3/129 gal.
Now, we can set up a proportion:
(3/129) gal = x gal / 688 mi
To solve for x, we can cross multiply:
129x = 3 * 688
129x = 2064
x = 2064 / 129
x ≈ 16
Therefore, approximately 16 gallons of gas would be required for a 688-mi trip.