QUESTION $3$

$(20$ Marks$)$

The Minister responsible for Trade and Industry has assigned you the task of evaluating the improvement in productivity of

manufacturing businesses in South Africa. Data for one of the businesses you are to evaluate is provided. The data are the

monthly average of last year and the monthly average for this year. Determine the percentage change in multi$-$factor

productivity between the two years.

Labor: R$8$ per hour

Capital: $0\mathrm{.}83\%$ per month of investment

Energy: R$0\mathrm{.}60$ per BTU