A group of 70 people attended a ball game. There were four times 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.

Question

A group of 70 people attended a ball game. There were four times 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.

anonymous · Answer

a + c = 70
c = 4a

plug 2nd one into first one