Refer to the exhibit.

A company manufactures three components on the same machine, on which there is spare capacity. An external supplier has offered to supply all of the company's requirements of the components. Data for the components are as follows:
Which components should be purchased from the external supplier?

Normal loss which has a scrap value in a process should be valued at:

When making a decision, for a cost or revenue to be classified as "relevant" it must be:
(a) Incremental
(b) Notional
(c) Cash
(d) Future

GB Limited operates a standard costing system. During the month 18,500 labour hours were worked at a standard cost of $6 per hour. The labour efficiency variance was $8,700 favourable.
How many standard hours were produced?

You are put in charge of a new, independent factory. The products you produce are cheap to produce but the profit margin is small. Maintaining low costs and maximum efficiency is key.
You are concerned that certain parts of the production line are producing excess waste and damaging profits.
Which type of cost centre would be most useful in this situation?