Ifx+y=10, and y+z=20 and x+z=30, then what
percent of x + y + z is x + y?
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General Chat Chat Lounge The interior of a triangle ABC touches its sides AB, BC and CA in P, Q and R, respectively. If AB = 14 cm. BC = 11 cm, CA = 7 cm, find AP and BQ and RC.
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