Answer:
a. 3,760
Step-by-step explanation:
The computation is shown below:
Period Demand Weight Demand × weight
1 3,500 0.15 525
2 3,800 0.20 760
3 3,500 0.25 875
4 4,000 0.40 1,600
Total 3,760
We simply multiplied the demand with the weight to get the total.