Posted by **Kate** on Sunday, September 25, 2011 at 1:37pm.

Chan drove for X miles at 45 miles an hour, Y miles at 60 miles an hour, and Z miles at 55 miles an hour. Which expression can be used to find the total numbers of hours that Chan drove?

A. (45+60+55)(XYZ)

B. 45X + 60Y + 55Z

C. (45+60+55)/XYZ

D. X/45 + Y/60 + Z/55

## Answer this Question

## Related Questions

- Math HELP! - Find the unit rate. Rounf to the nearest tenth, if necassary. 344 ...
- maths - A motorist travels 120 miles to his destionation at an average speed of ...
- Math- Multi-step word problems - A canoe in still water travels at a rate of 10 ...
- math - substitute to find the value of the expression. A train must cover a ...
- math - Two helicopters leave Springfield, IL at the same time. One travles north...
- 7th grade - Find tony's rate in miles per hour for each part of the route. ...
- Physics - A bus started out going 20 miles per hour on the highway. One hour ...
- Math- Multi-step word problems - A plane traveling from Phoenix to Washington, D...
- Physics - A bus started out going 20 miles per hour on the highway. One hour ...
- Physics - A bus started out going 20 miles per hour on the highway. One hour ...