Answer:
Product B $ 5.00 per hour
Product C $ 4.50 per hour
Product A $ 4.00 per hour
Explanation:
[tex]\left[\begin{array}{cccc}&A&B&C&Sales&30&20&15&Variable&-18&-15&-6&CM&12&5&9&Constrain \:resource&3&1&2&CM \: per \:constrain&4&5&4.5&\end{array}\right][/tex]
FIorst we calculate the CM per product
then we divide this CM by the consumption on the bottleneck resource.