本帖最后由 艾比 于 2012-10-30 11:59 PM 编辑
My answers are as follow;

Q1: 23/18 x 100% = 127.78%, therefore increase
Q2: 55/67 x 100% = 82.09%
Q3: In year 2011 = 13/50 x 100% = 26%
In year 2012 = 2/67 x 100% = 2.99%
Therefore, the highest share is year 2011.
Q4: In year 2011 = 21/50 x 100% = 42%
In year 2012 = 40/67 x 100% = 59.7%
Therefore, the lowest share is year 2011.