Question 124897
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