Question 242483
The car drives 35mph for 35 miles, then 50mph for 100miles, and 53mph for 53miles. 
What is the car average speed for the whole trip?
:
Find the total miles driven
35 + 100 + 53 = 188 miles
:
Find the total time (time = dist/speed)
{{{35/35}}} + {{{100/50}}} + {{{53/53}}} = 
1 + 2 + 1 = 4 hrs
:
{{{188/4}}} = 47 mph is the average speed