Larry's Auto Body Repair Shop had revenues that averaged $60,000 per week in April and $50,000 per week in May. During both months, the shop employed six full-time (40 hours/week) workers with wages of $20/hour.

In April the firm also had four part-time workers working 25
hours per week, but in May there were only two part-time workers and they only worked 10 hours per week. For both months, part-time workers' wages are $10/hour.

1) Calculate partial weekly labor productivity ($/$=1) for April and May.

2) What is the percentage change in weekly labor productivity ($/$=1) from April to May for Larry's Auto Body Repair?

Hint: percentage change from the original case to the new case can be calculated in the following way.

(Productivity for the new - Productivity for the original)/Productivity for the original