The average of the two numbers A and B is 60, the average of the two numbers B and C is 68, and the average of the two numbers A and C is 64. Find the average of the three numbers A, B, and C.
甲、乙两数的平均数是60，乙、丙两数的平均数是68，甲、丙两数的平均数为64，求甲、乙、丙三个数的平均数．
<gadget id="calculator">60 + 68 + 64</gadget>
<output>192</output>

<gadget id="calculator">192 / 2</gadget>
<output>96</output>

<result>96</result>