Question

Philip is going on a 400040004000-kilometer road trip with three friends. The car consumes 666 liters of gas per 100100100 kilometers, and gas costs \$1.50$1.50dollar sign, 1, point, 50 per liter. If Philip and his friends want to split the cost of gas evenly, how much should they each pay?

Answer 1

Let's calculate how much gas would car consume during the trip.
First, we will calculate how much it consumes per kilometer:

`g_(ckm)=6/100=0.06(l)/(km)`
The total consumption for the whole trip would be:

`g_t=L\cdot g_(ckm)=0.06\cdot 4000=240 l`
To get the total cost of the gas we multiply the total gas consumed by its cost:

`C_t=g_t\cdot1.5=360\$`
So, each passenger must pay $90.

Answer 2

Let us calculate how much gas he will need for the trip. Since he needs 6 liters for 100 miles, he will need x for 4000 miles. Gas is proportional to mileage. Solving for x, x=4000/100 *6=240
In total, this will cost 240*1.5=360$. He has 3 friends, so they are 4 in total. Everyone will have to pay 360/4=90$