Correct option is C
Number of workers does U-type of work in 2006 = 22% of 54000 = 11880
Number of workers does W-type of work in 2005 = 10% of 47520 = 4752
Number of workers does X-type of work in 2005 = 15% of 47520 = 7128
On adding
11880 = 4752+ 7128
11880 = 11880







