Asked by ben

Suppose your car gets 36 miles per gallon of gasoline, and you are driving 45 miles per hour. Using unit analysis, find the number of hours it takes to use 1 gallon of gas.


I got 48 minutes but I'm not sure.
Answered by Damon
1 h/45 mi * 36 mi/1 g

mi cancels and you are left with 36/45 hours/gallon
Answered by ben
You wouldn't multiply that answer by 60 ?

36/45 is .8
Answered by Damon
It is in hours and it asks for hours.
If you wanted minutes you would multiply by 60 min/h to cancel the h and get min/gal but it did not ask for that.
Answered by ben
Okay got it. Thank you..
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