SOLUTION: The product of a two-digit nimber and its tens digit is 54. Fing the number if the sum of the digits when added to the number gives a result of 36.

Question 165706: The product of a two-digit nimber and its tens digit is 54. Fing the number if the sum of the digits when added to the number gives a result of 36.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Call the units digit
Call the tens digit
The number is
given:
(1)
(2)
from (2):

Substitute this in (1)

Multiply both sides by

Divide both sides by

(just by looking at it)
makes sense because it is (+)
(2)
(2)

The number is 27
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