Silverdale currently cuts a component by hand, using 4 machinists, each paid 15 pounds an hour.
(a)Calculate the current total hourly labour cost of the 4 machinists.(2)
(b)A new CNC (computer numerical control) machine would need only 1 operator, still paid 15 pounds an hour, to produce the same output. Using your answer to part a, calculate the hourly labour cost saving from installing the machine.(2)
(Total for Question 4 is 4 marks)