SOLUTION: On Monday, Roger drove to work in 2 hours. On Tuesday, he averaged 15 miles per hour more, and it took him 30 minutes less to get to work. How far (in miles) does he travel to work

Question 388835: On Monday, Roger drove to work in 2 hours. On Tuesday, he averaged 15 miles per hour more, and it took him 30 minutes less to get to work. How far (in miles) does he travel to work?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
On monday:

(1)
On Tuesday:

(2)
Substitute (1) into (2)

And, from (1),

He travels 90 mi to work
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