SOLUTION: Points A, B, C, and D are arranged in order on a line so that AB = 3BC and BC = 2CD. What fraction of AD is BD?

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Question 108186: Points A, B, C, and D are arranged in order on a line so that AB = 3BC and BC = 2CD. What fraction of AD is BD?
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
Let CD=1
Then BC=2 and AB=6
AD=9 and BD=3
So BD/AD=3/9=1/3
Ed