Respuesta :

t = tens digit
u = ones digit.

If we made it into a value, that would be equal to
10t + u

if we want to interchange the values of the two digits, then 
tens = 10*u
ones = t / 10

Then getting the value of the digit after interchanging
10u + (t/10)
yamadoo74

Answer: the correct answer is 10u+t

Step-by-step explanation: