It takes 6 minutes for a part to be processed, 5 minutes for B and 4 minutes for C. now, 2220 parts are processed by 3 people in the same time, and each person is assigned How many parts of the mission? In proportion

It takes 6 minutes for a part to be processed, 5 minutes for B and 4 minutes for C. now, 2220 parts are processed by 3 people in the same time, and each person is assigned How many parts of the mission? In proportion

Efficiency ratio 1 / 6:1 / 5:1 / 4 = 10:12:15
A: 2220 * 10 / (10 + 12 + 15) = 600
B: 2220 * 12 / (10 + 12 + 15) = 720
C: 2220 * 15 / (10 + 12 + 15) = 900