SOLUTION: What is the answer to I am a 2 digit number . The sum of my digits is 9. My tens digits is even. My ones digit is one more than the tens digit. What number am I?

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Question 341243: What is the answer to I am a 2 digit number . The sum of my digits is 9. My tens digits is even. My ones digit is one more than the tens digit. What number am I?
Found 2 solutions by fractalier, texttutoring:
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
A few ways to do this...but the simplest way I think is to list the two-digit numbers whose tens digit is even and digits add to nine...we have
27
45
63
81
The only one where the ones digit is one more than the tens digit is 45.

Answer by texttutoring(324) About Me  (Show Source):
You can put this solution on YOUR website!
Let x= tens digit
Let y = ones digit

Equation 1: x+y = 9
Equation 2: y=x+1

Substitute Equation 2 into Equation 1:

x+ (x+1) = 9
2x + 1 = 9
2x = 8
x = 4

So the tens digit is 4. This means that the ones digit is y =4+1 = 5

The number is 45.