In 2011 Buckeye Brewing produced 1,000 bottles of ginger ale each day. It employed 10 workers each working 8 hours a day. In 2012 it produced 960 bottles of ginger ale each day employing 8 workers who worked 8 hours each day. Productivity at Buckeye Brewing
a, increased by 20%
b, increased by 16.67%.
c, decreased by 1.67%.
d, decreased by 40%.