SOLUTION: The ones digit of a number is 1 more than twice the tens digit. If the digits are reversed, the new number is 8 less than 3 times the original number. What is the original number?

Question 915117: The ones digit of a number is 1 more than twice the tens digit. If the digits are reversed, the new number is 8 less than 3 times the original number. What is the original number? Thanks in advance, and please do hurry up, I need to submit it soon.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Call the original number
where:
= the tens digit
= the units digit
-----------------------
given:
(1)
(2)
-------------------------------
(2)
(2)
----------------------
Substitute (1) into (2)
(2)
(2)
(2)
(2)
and
(1)
(1)
(1)
---------------
The original number is 13
---------------
check:
(2)
(2)
(2)
(2)
(2)
OK

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