SOLUTION: To reach their vacation house across a lake, a family has to go 1/3 of the way by boat, 12km. by car and 1/2km. by foot. How far will they have to travel to reach the vacation hous

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Question 914351: To reach their vacation house across a lake, a family has to go 1/3 of the way by boat, 12km. by car and 1/2km. by foot. How far will they have to travel to reach the vacation house by that route?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
12.5km = (2/3)D
%283%2F2%2912.5+ = D =++1.5%2A2.5= 18.75km