Teng Supermarket wants to recruit a cashier, and has conducted three quality tests on three candidates A, B and C, with a full score of 100.

The average score of (1) A is: (85+70+64)÷3=73,

The average grade of B is: (73+7 1+72)÷3=72,

The average grade of C is: (73+65+84)÷3=74,

∴ C has the best average score, and candidate C will be hired;

(2)A's test score is: (85×5+70×3+64×2)÷(5+3+2)=76.3,

The test score of B is: (73× 5+71× 3+72× 2) ÷ (5+3+2) = 72.2.

The test score of C is: (73×5+65×3+84×2)÷(5+3+2)=72.8.

∴ A has the best comprehensive score, and candidate A will be hired.

(1) Use the average formula: you can get the average score of three people and compare the results;

(2) Calculate the test scores according to the total scores of the three people and compare the results.