Joe has to take a test which consists of short-answer questions worth 9 points each and essay questions worth 25 points each. He must do at least 9 short-answer questions, but won't have time to do more than 10. He has to answer at least 3 essay questions, but can't spend time to do more than 10. If no more than 19 questions can be done, what is his maximum score?
Hi, here is the solution,
Let x be the number short-answer questions and y be the number of essay ...
A word problem is solved subject to constraints.