Question 1110874
14A+16C=394
9A+15C=324
multiply top by 9 and bottom by -14
126A+144C=3546
-126A-210C=-4536
-66C=-990
C=15
from first, 14A+240=394
14A=154
A=11
check in second
99+225=324
child is $15
adult is $11