Question 715775
A+C=380
A=380-C
8A+5C=2377
8(380-C)+5C=2377
3040-8C+5C=2377
-3C=2377-3040
-3C=-663
C=-663/-3
C=221 CHILDREN'S TICKETS WERE SOLD.
A+221=380
A=380-221
A=159 ADULT TICKETS WERE SOLD.
PROOF:
8*159+5*221=2377
1272+1105=2377
2377=2377