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April 21, 2015

April 21, 2015

Posted by **Anonymous** on Wednesday, March 2, 2011 at 10:23pm.

- geometry -
**MathMate**, Wednesday, March 2, 2011 at 10:40pmUse ratios

4 : 7 : 7-4=3

X : Y : 15"

Cross multiply with X:

X=4*15/3=20

Cross multiply with Y:

Y=7*15/3=35

Check: Y-X=15, Y/7=X/4=5 OK

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