Answer:
The weighted-average unit contribution margin is $610
Step-by-step explanation:
Hi, first we need to find the contribution margin for each line of product. This is as follows.
Laptops
![Price-Var.Cost= Contrib.Margin](https://img.qammunity.org/2020/formulas/business/high-school/jimwu1h6pjkhe29h1aasiv8sss2e4dl4bi.png)
![700-300=400](https://img.qammunity.org/2020/formulas/business/high-school/3575o7qpdyw9gv7i19o9ovyw8bbmwlneug.png)
Desktops
![1,800-700=1,100](https://img.qammunity.org/2020/formulas/business/high-school/9bekirgzutfzk94wuddpds0lkmxf16y5ng.png)
Now, the weighted-average unit contribution margin is as follows.
![Contrib.Margin(Laptops)*Percent(Laptops)+Contrib.Margin(DeskT)*Percent(DeskT)](https://img.qammunity.org/2020/formulas/business/high-school/g01mvjeefmopbsivqdtgopoe9bfwjfdef2.png)
![1,100*0.3+400*0.7=610](https://img.qammunity.org/2020/formulas/business/high-school/gy46jyuylgj2ndxtboiqdipckzntsxng33.png)
So, the weighted-average unit contribution margin for this company is $610
Best of luck