Forum rules says
In this forum we cannot allow direct help with homework or assignment questions
But how do you determine that an OP’s question is home work?

For me the main criteria are a first time poster with a solver problem. As solver is an excel add-in that most user don’t see a need for so when somebody need to set up an advertising model with a budget of millions of dollars I do get suspicious.

If solver is not setup in the uploaded file that strengthen my suspicion and finally when the OP says he must use solver. He doesn’t know why or how but he must have a solver solution then I’m convinced that this is a home work problem.

So I would like to know what other telltale mark do you look for.

Alf