SOLUTION: the tens digit is four times the one digit in a certain number. If the sum of the digits is 10, What is the number ?

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Question 661092: the tens digit is four times the one digit in a certain number. If the sum of the digits is 10, What is the number ?
Answer by ReadingBoosters(3246) About Me  (Show Source):
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Establish
x = ones
y = tens
Given
y = 4x
x+y=10
Substitute
x + 4x = 10
Combine like terms
5x = 10
x = 2