Question

The ratio of the units digit to the tens digit in a two-digit number is one-half. the tens digit is two more than the units digit. find the number.

Answer 1

Let the first digit of the 2-digit number be x and the second digit be y.
Then the ratio (x/y) equals (1/2).  Write a formula for y in terms of x.

The tens digit is 2 more than the units digit.  Using the letters x and y, write out the proper equation.

Now solve your two equations simultaneously for x and y.