Answer: Weighted average contribution margin would be 1.13.
Step-by-step explanation:
Since we have given that
Cost of large drink = $1.70
Variable cost of large drink = $0.40
Cost of small drink = $ 1.10
Variable cost of small drink = $0.30
According to question, we get that It sells two large drinks for every small drink.
Ratio would be 2:1.
Cost of large drink becomes = $1.70-0.40 = $1.30
Cost of small drink becomes = $1.10 - $ 0.30 = $0.80
So, Weighted average contribution margin would be
[tex]1.30\times \dfrac{2}{3}+0.80\times \dfrac{1}{3}\\\\=1.13[/tex]
Hence, weighted average contribution margin would be 1.13.