Posted by **ben** on Saturday, December 8, 2012 at 9:47pm.

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.

- problem solving -
**Damon**, Saturday, December 8, 2012 at 9:53pm
1 h/45 mi * 36 mi/1 g

mi cancels and you are left with 36/45 hours/gallon

- problem solving -
**ben**, Saturday, December 8, 2012 at 9:59pm
You wouldn't multiply that answer by 60 ?

36/45 is .8

- problem solving -
**Damon**, Saturday, December 8, 2012 at 10:05pm
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.

- problem solving -
**ben**, Saturday, December 8, 2012 at 10:08pm
Okay got it. Thank you..

## Answer this Question

## Related Questions

- Math - The Honda Civic Hybrid vehicle, powered by gasoline-electric technology, ...
- Math - Ms.abbot went on a road trip. The trip was 792 miles and the average ...
- Word Problems - If your car gets 18 miles per gallon of gasoline, how many pints...
- Quantitative methods - Hostis sent a car company charges 45 dollars per day plus...
- eco - during2004 the national average gas price rose from $1.50 a gallon to $2....
- math - How much would it cost to drive 54.2 miles in a car that gets 16 miles ...
- math - On a weekend road trip, the Jensen family drove 210 miles on highways, ...
- math - Owners of SUVs need to know the miles per gallon every month. Given the ...
- statistics - 16. Based on tests of the Chevrolet Cobalt, engineers have found ...
- Algebra 1 - Victor needs to calculate the number of miles per gallon his car ...