How many 2 digit integers are 6 times the sum of their digits?
Well if the number is ab where are and b are the digits then the number really is 10a+b
See if you can use that to help you. You need to make an equation.
Please no other answer give more, this is a good hint.
I can only think of 54.
[5 +4] x 6 = 54
That might be the only one
Have you set up an equation? If you do then it is easy to check all possibilities.