If the tens digit of positive integers t, y are 6, how many values of the tens digit of 2(t+y) can be there?	Choose the correct choice from the following answers
A) 2
B) 3
C) 4
D) 5
E) 6
If the tens digit of positive integers t, y are 6, how many values of the tens digit of 2(t+y) can be there?   A. 2   B. 3   C. 4   D. 5   E. 6   -&gt; If t=y=60, 2(t+y)=240 is derived. If t=y=69, 2(t+y)=276 is derived, which makes 4,5,6,7 possible for the tens digit. Therefore, the answer is 4.
<result>C</result>
If the tens digit of positive integers t, y are 6, how many values of the tens digit of 2(t+y) can be there?