Question 1097847
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Let T be the tens digit and U be the ones digit.

Then your number N is N = 10*T + U.


First part of the condition gives you this equation:

10*T + U = 8*(T+U).    (1)


Second part of the condition gives you another equation:

6*U = T + 5.           (2)


Thus you have this system of two equations

10*T + U = 8*(T+U),    (1)
 6*U = T + 5.          (2)


which you can easily solve.


Since I do not want to deprive you this pleasure to solve it on your own, I leave the solution to you.
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Happy solving ! !