Sergio got 80% on his math test. If he answered 24 questions correctly, how many questions where on his test?
2 answers:
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To solve this problem, we first have to create a system of equations. After that, you set the equations equal to each other, and use that to simplify and find the value of one variable. Once that is found that answer can be plugged into one of the two original equations to find the other variable.