Dongsheng advertising company wants to recruit an advertising planner, and has conducted three quality tests on three candidates A, B and C. Their test results are as follows.

The average score of (1)∫A is: (72+50+88) ∫ 3 = 70,

The average score of three tests of B is (85+74+45)÷3=68.

The average score of the third test is (67+70+67) ÷ 3 = 68;

A will be hired.

(2) They are:

A: 72×50%+50×30%+88×20%=68.6.

B: 85×50%+74×30%+45×20%=73.7。

C: 67×50%+70×30%+67×20%=67.9。

B will be hired.