Answer: 77.83 dollars.
Step-by-step explanation:
Contribution margin is known as the difference between the Selling price and variable costs.
So in the above scenario,
Product A Contribution Margin = 77 - 32
= $45
Product B Contribution Margin = 164 - 52
= $112
Now we are to calculate the Weighted Average. To do that we multiply the Contribution margins by their proportion of the sales mix and then add them up.
Product A proportion = 51%
Product B proportion = 49%
Weighted Average = 0.51(45) + 0.49(112)
= 77.83
The weighted average unit contribution margin is 77.83 dollars.
If you need any clarification do comment.