
Andy C. answered 08/14/17
Tutor
4.9
(27)
Math/Physics Tutor
A + C = 23
16A + 3C = 147
Solves the first equation for C:
C = 23 - A
16A + 3(23 - A) = 147
16A + 69 - 3A = 147
13A = 147 - 69
13A = 78
A = 6
6 adult tix and 17 children tix
6 x 16 + 17 x 3 = 96+51 = 147 <--- yes, it checks
The answer is in bold above and is proven to be correct