SOLUTION: One positive number equals 3 times another. their difference is 10

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Question 708966:

One positive number equals 3 times another. their difference is 10
Answer by checkley79(3341) About Me  (Show Source):
You can put this solution on YOUR website!
X=3Y
X-Y=10
X=Y+10
3Y=Y+10
3Y-Y=10
2Y=10
Y=5 ANS.
X=3*5=15 ANS.
PROOF:
15=3*5
15=15