Subject: Production Planning and Control

IMPROTANT NOTE: use this number "5" to modify problems then solve:

Exercise 4. A firm's sales for a product line during the past 12 quarters were as nons: Quarter Sales Quarter Sales Quarter Sales 1 42 5 38... 2 105 - 6 40... 10 3 168 7 41 X. 11 31 x 8 45 X. 12 The firm wants to make forecasts for quarters 9, 10, 11 and 12 N= BOR 1 2 3 4 un 6 7 8 Year Sales (D) t.D b= D. = +