Problem $3$:

Answer the following questions using the below information:

Tires produced $1000$

Labour $500$ hours per day x $$12\mathrm{.}50$ per hour

Raw material $30,000$ pounds per day x $$1$ per pound

Energy $$6000$ per day

Capital costs $$15,000$ per day

a$)$ What is the labour productivity per labour$-$hour?

b$)$ What is the multifactor productity?

c$)$ What is the percent change in multifactor productivity if there is a reduction in the energy bill by $$1000$ per day without cutting production of changing any other inputs?