Two components, A and B, are used as follows:
normal usage - 50 per week each
minimum usage - 25 per week each
maximum usage - 75 per week
re-order quantity - A:300; B:500
re-order period - A: 4 to 6 weeks; B: 2 to 4 weeks
calculate for each component:
(a) re-order level
(b) minimum level
(c) maximum level
(d) average stock level
Comment briefly on the difference in levels for the two components.