Z Limited manufactures three products, the selling price and cost details of which are given below:

Product

Product

Product

X

Y

Z

(£)

(£)

(£)

Selling price per unit

75

95

95

Costs per unit:

Direct materials

10

5

15

(£5 /kg)

Direct labour

16

24

20

(£4/hour)

Variable overhead

8

12

10

Fixed overhead

24

36

30

In a period when direct materials are restricted in supply, the most and the least profitable uses of direct materials are

Most profitable

Least profitable

A

X

Z

B

Y

Z

C

X

Y

D

Z

Y

E

Y

X