Let the price of one T-Shirt be "x".
Therefore, the price of two T-Shirts will be 2x....Equation 1
Now, it is given that the cost of shoes is $22......Equation 2
Michael and Morgan together pay a total of $12 (from the gift certificate) plus $36.50=$48.50.........................Equation 3
Therefore, the above equations give us:



Thus, the cost of one T shirt is $13.25