SOLUTION: Driving to your friend's house, you travel at an average rate of 35 miles per hour. On your way home, you travel at an average rate of 40 miles per hour. If the round trip took you

Question 1047520: Driving to your friend's house, you travel at an average rate of 35 miles per hour. On your way home, you travel at an average rate of 40 miles per hour. If the round trip took you 45 minutes, how far is it from your house to your friend's house
Answer by josgarithmetic(39627) (Show Source): You can put this solution on YOUR website!
RT=D basic Travel Rate Rule

               SPEED           TIME         DISTANCE

GOING          r                          d

RETURN         R                           d

ROUNDTRIP                      


KNOWN VARIABLES: r, R, t
UNKNOWN:  d

Obvious equation is summation of time.

Solve for d.
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