00:01
So this question is a simple unit conversion question, very similar to a lot of the questions in this chapter.
00:05
So comparing different types of gasoline in terms of their how much mileage the car gets per gallon of gas versus how much the gas actually costs, which is going to be cheaper, right? how much money will it cost to travel 500 miles with each type of gas? so let's start with the regular gasoline, right? so let's say it costs $500.
00:30
Notice the decimal point, right? so three significant figures in all of our terms in this problem.
00:34
So our answer in both problems are going to round the three significant figures.
00:39
So you get 500 miles, right? so we're going to be traveling 500 miles.
00:46
And each mile we travel, right? so after 28 miles, we're going to consume one gallon of gas.
00:59
So one gallon for every 28 miles and i forgot to include the unit for the sale of gas, right? so it's some dollar amount per gallon.
01:11
That's how we're going to cancel our gallons out.
01:13
So you get $3 .50.
01:15
I'll choose a d because i'm getting too close to the line here...
