Netty manufactures Christmas tree ornaments for resale at local craft fairs and Christmas bazaars. She is currently working a total of fifteen hours per day to produce three hundred ornaments.
a) What is Netty's productivity?
b) Netty thinks that by redesigning the ornaments and switching from contact cement to a hot-glue gun, she can increase her total production to 400 ornaments per day. What would be her new productivity?
c) What would be the increase in productivity?