please show me full work. thank you

Problem 1: A company that makes shopping carts for supermarkets and other stores recently purchased

some new equipment that reduces the labour content of the jobs needed to produce the shopping carts.

Prior to buying the new equipment, the company used four workers, who produced an average of 80

carts per hour. Labour cost was $10 per hour and machine cost was $40 per hour. With the new

equipment, it was possible to transfer one of the workers to another department. Machine cost

increased by $10 per hour while output increased by four carts per hour.

a. Calculate labour productivity before and after the new equipment. Use carts per worker per

hour as the measure of labour productivity.

b. Calculate the multi-factor productivity before and after the new equipment. Use carts per

dollar cost (labour plus machine) as the measure.

c. Comment on the changes in productivity according to the two measures (labour and

multifactor). Which measure do you believe is more pertinent for this situation and why?