Problema Solution
Juan drives to work.because of traffic conditions, he averages 22 miles per hour. He returns home averaging 32 miles per hour. The total travel time is 2 1/4 hours.
Answer provided by our tutors
We will use the general equation d=rt (distance=rate*time). Since it is a round trip, we know that the distances are the same. From the given information, we can write:
Drive to work:
d=22t
Drive from work:
d=32(2.25-t)
Using Algebrator to solve for t and d, we get:
t=1 1/3 hr
d= 29 1/3 miles
We can also say that the time to drive home was:
Time home= 2 1/4 - 1 1/3= 11/12 hr