Question 1171998
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First, your question should be about the REVENUE, not about the profit

(for which the problem does not provide any data)




Second, the TWIN problem was solved under this link


<A HREF=https://www.algebra.com/algebra/homework/coordinate/word/Linear_Equations_And_Systems_Word_Problems.faq.question.1171990.html>https://www.algebra.com/algebra/homework/coordinate/word/Linear_Equations_And_Systems_Word_Problems.faq.question.1171990.html</A>


https://www.algebra.com/algebra/homework/coordinate/word/Linear_Equations_And_Systems_Word_Problems.faq.question.1171990.html


15 minutes ago.


Consider it as your TEMPLATE and solve the given problem in the SAME WAY.




Third, I noticed and I am impressed on how fast you adopted and adsorbed this technical term "increment" from my solution, referred above.