7. Chambers Inc. is considering using the PBB lot-sizing approach, but first they want to compare it to their current lot-sizing method (EOQ). They have selected a sample component for the comparison, and its requirements are given below. Ordering cost is $27 per order, and carrying cost is $0.25 per unit per period. (Use average inventory.)

Period 1 2 3 4 5 6 7 8 Requirements 51 14 59 93 44 12 67 60