
Christopher J. answered 05/13/20
Berkeley Grad Math Tutor (algebra to calculus)
Let G be the number of general admission tickets sold and C the number of children tickets sold.
We know G=20C
We also know, 15*G+8*C=616,000
Substitute G=20C into this equation
15*(20*C)+8*C=616,000 solve for C and then find G using G=20C