Respuesta :
Answer:
$9
Step-by-step explanation:
Child tickets cost less than adult tickets. Thus, it can’t be $5 because the child’s ticket would be equivalent to $29.
Since you already know the total cost for the tickets, the price can’t be any higher than $59. Thus, you can eliminate both $11 and $12.
Therefore, you’re left with $9.
Answer:
$9
Step-by-step explanation:
let a represent the cost of an adult ticket and c the cost of a childs , then
6a + c = 59 → (1)
14a + 7c = 161 → (2)
multiplying (1) by - 7 and adding to (2) will eliminate c
- 42a - 7c = - 413 → (3)
add (2) and (3) term by term to eliminate c
- 28a + 0 = - 252
- 28a = - 252 ( divide both sides by - 28 )
a = 9
the cost of an adult ticket is $9
