Mega Movies hosted a film premiere on Friday night. They charged $\$8$ for adults and $\$4$ for children. One hundred fifty-one adults and children attended, and $\$1,120$ was made in ticket sales. How many children and how many adults went to the film premiere?
Do it yourself for practice by plugging it in to a similar problem:
https://www.algebra.com/algebra/homework/coordinate/word/Linear_Equations_And_Systems_Word_Problems.faq.question.675187.html