Question 747649
C+A=2600 OR C=2600-A
3C+5A=9600
3(2600-A)+5A=9600
7800-3A+5A=9600
2A=9600-7800
2A=1800
A=1800/2
A=900 ADULTS  ANS.
C=2600-900
C=1700 CHILDREN ANS.
PROOF:
3*1700+5*900=9600
5100+4500=9600
9600=9600