SOLUTION: A 21-foot board has been cut into two sections, one twice as long as the other. How long is each section?

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Question 988702: A 21-foot board has been cut into two sections, one twice as long as the other. How long is each section?
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
A 21-foot board has been cut into two sections, one twice as long as the other. How long is each section?
letx=length of shorter section
21-x=length of longer section
21-x=2x
3x=21
x=7
length of shorter section=7
21-x=length of longer section=14