Not completely sure but the speed of light
Answer:
Car 1 - 25
Car 2 - 30
Step-by-step explanation:
Assuming we use car 2 as much as possible than car 2 consumed 30 gallons while car 1 consumed 25
(35x30)+(15x25)=1425
30+25=55
Sorry if this is wrong. I tried my best, if it is wrong than tell me so I will know and can try to improve.
Then, the total weight would be: 3 * 14 = 42 Ounces
