Step-by-step explanation.
Let A = # of adults and C = # of children. A + C = 2015A + 10C = 225 There are several ways to solve this system; here is one of them. From the first equation: C = 20 - ASubstitute into the second equation: 15A + 10(20 - A) = 225Multiply, collect terms, and subtract 200 from each side: 5A = 25 => A = 5Since C = 20 - A, C = 15.
got this from a guy named Paul M. a tutor that I found online.
sorry if its incorrect tho .