SOLUTION: If a trip takes normally 15 hours at an average speed of 75 MPH how fast would you have to go to make the same trip in 9 hours

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Question 854770: If a trip takes normally 15 hours at an average speed of 75 MPH how fast would you have to go to make the same trip in 9 hours
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+d+=+r%2At+
For the actual trip:
+d+=+75%2A15+
---------------
If you make the trip in +9+ hrs
+d+=+r%2A9+
by substitution:
+75%2A15+=+9%2Ar+
+r+=+%28+75%2A5+%29+%2F+3+
+r+=+25%2A5+
+r+=+125+
Your speed would have to be 125 mi/hr