Posted by Kate on .
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

6th grade math 
Ms. Sue,
Which answer do you think is right?
Hint: only two operations are involved here  addition and multiplication. 
6th grade math 
Kate,
isn't it B?

6th grade math 
Ms. Sue,
You're right. :)

6th grade math 
Kate,
thanks :)

6th grade math 
Ms. Sue,
You're welcome.

6th grade math 
maheen,
how to make angles of 96 180 147