SOLUTION: What two-digit number is equal to twice the product of its digits?

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Question 100932: What two-digit number is equal to twice the product of its digits?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
What two-digit number is equal to twice the product of its digits?
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Every two digit number can be written as 10t+u where t is the tens
digit and u is the ones digit.
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EQUATION:
10t+u = 2(t+u)
10t+u = 2t+2u
8t= u
t = (1/8)u
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If u=8 then t = 1
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Number:
The number is 18
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Cheers,
Stan H.