NO.PZ201806200500006802
问题如下：
Maggie is collecting some companies' information, company X, company Y, and company Z.
2. Which of the companies has the highest accounts payable turnover in the year 2017?
选项：
A. Company Y.
B. Company X.
C. Company Z.
解释：
B is correct.
account payable=purchase/AP
Company X: 9/3.5= 2.57
Company Y: 6/2.5= 2.4
Company Z: 5.5/2.6= 2.12
老师，这题分母的payable不用平均数么？
