00:01
Okay, so i see that you need help with this problem.
00:04
And so it says the graph below shows fuel consumption in miles per gallon of a car driving at various speeds in miles per hour.
00:16
How much gas is used at 400 mile trip at 80 miles? so a 400 mile trip miles per gallon and 80 miles per hour.
00:38
So 80 miles per hour is getting approximately 20 miles to the gallon.
00:46
So that is, or i'm sorry, not 20 miles to the gallon.
00:50
And 80 miles per hour, okay, is getting about, we'll say, 22 and a half.
01:02
So 22 and a half miles per gallon.
01:06
And so then what i'm going to do is i'm going to do 400 divided by 22 .5.
01:17
And that is 17 .7 gallons of gas.
01:33
Okay.
01:34
That's a.
01:36
B.
01:39
How much gas is saved by traveling 60 miles per hour instead of 70 miles per hour? so at 60 miles per hour, okay, we're using about 30 miles per gallon.
01:54
So 60, we're using about 30 miles per gallon...