SOLUTION: The sum of the digits of a two digit number is 12. If 15 is added to the number, the result is 6 times the units digit. Find the number.

Algebra ->  Expressions-with-variables -> SOLUTION: The sum of the digits of a two digit number is 12. If 15 is added to the number, the result is 6 times the units digit. Find the number.       Log On


   

Question 1001877: The sum of the digits of a two digit number is 12. If 15 is added to the number, the result is 6 times the units digit. Find the number.
Answer by josgarithmetic(39625) About Me  (Show Source):
You can put this solution on YOUR website!
PLAN
(1) Pick variables, t for the tens, u for the ones or units.
(2) Form the number;
(3) Write the equations to represent the description;
(4) Solve for t and u.

system%28t%2Bu=12%2C%2810t%2Bu%29%2B5=6u%29
Solve the system for t and u, and identify the number, 10t%2Bu.