Question

A group of 33 people attended a ball game. There were twice as many children as adults in the group. Set up a system of equations that represents the numbers of adults and children who attended the game and solve the system to find the number of children who were in the group

Answer 1

c = # of children
a = # of adults

twice as many children as adults ---> c = 2a
group of 33 people attended the game ---> c + a = 33
you can plug in c = 2a into the second equation c + a = 33 to get it in terms of a only, solve for a, then go back to c = 2a to calculate c