The average of A and B is 50;000; B and C is 60;000; and A and C is 55;000. Find B’s value.

The average of A and B is 50;000; B and C is 60;000; and A and C is 55;000. Find B’s value.
A: 50;000
B: 55;000
C: 60;000
D: 65;000

Given