Problem Solving 2:

In the following table represents data on laptops sales for 7 periods.

Data on Laptops Sales

period Sales of Laptops

1 670

2 750

3 620

4 520

5 410

6 500

7 590

8 None

Questions:

1.Compute The forecasting of the periods 5,6, and 8 using the Simple Moving Average of order 1, 3, and then 4.

2.Compute The forecasting of the periods 7, and 8 using the weighed moving average of order 2 (the weights are 15 and 5 from most recent period).

3.Compute The forecasting of the periods 6, and 8 using the weighed moving average of order 4 (the weights are 12, 6, 7, and 4 from most recent period).

4.Compute the forecasting of period 7, for demand of computers, using the exponential smoothing with = 0.4 and F₄ = 500.

Problem Solving 3:

We propose the following linear programming model.

Questions:

Use the graphical methods to find the optimal solution to the proposed linear program.

Max Z = 20.x1 + 80.x2 Subject to: x1 + 3.x2 90 x1 + x2 40 4.x1 + x2 120 x1, x2 0