SOLUTION: A group of 80 people attend a ball game. There were three times as many children as adults in the group. Write a system of equations that you could use to set up this problem, wher
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Question 124897: A group of 80 people attend a ball game. There were three times as many children as adults in the group. Write a system of equations that you could use to set up this problem, where a is the number of adults and c is the number of children in the group. Solve the system of equations for c, the number of children in the group. Answer by checkley71(8403) (Show Source):
You can put this solution on YOUR website! C+A=80 OR C=80-A
C=3A NOW SET THESE 2 EQUATION EQUAL BECAUSE THEY BOTH EQUAL C.
3A=80-A
3A+A=80
4A=80
A=80/4
A=20 NUMBER OF ADULTS.
80-20=60 CHILDREN.
PROOF.
3*20=80-20
60=60
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