SOLUTION: Micaela drove from Baltimore to Annapolis during rush hour at an average speed of 30miles per hour, and then drove back the same way at an average speed of 45miles per hour. If th

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: Micaela drove from Baltimore to Annapolis during rush hour at an average speed of 30miles per hour, and then drove back the same way at an average speed of 45miles per hour. If th      Log On

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Question 1015544: Micaela drove from Baltimore to Annapolis during rush hour at an average speed of 30miles per hour, and then drove back the same way at an average speed of 45miles per hour.
If the round trip took 1 hour and 30 minutes, how many miles is Micaela's one-way trip from Annapolis to Baltimore?

Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
.
D=1-way distance
Distance/rate=time
.
D%2F30%2BD%2F45=1.5
%28D%2F30%29%2845%2F45%29%2B%28D%2F45%29%2830%2F30%29=1.5
%2845D%29%2F1350%2B%2830D%29%2F1350=1.5
%2875D%29%2F1350=1.5
75D=%281.5%29%281350%29
75D=2025
D=27
.
ANSWER: The distance one way is 27 miles.