Answer:
Cost of adult ticket = $12.5
Cost of child ticket = $7.5
Step-by-step explanation:
Given:
Cost of 6 adult ticket and 5 child ticket = $112.5
Cost of 8 adult ticket and 4 child ticket = $130
Find:
Equation and solution
Computation:
Assume;
Cost of adult ticket = a
Cost of child ticket = b
So,
6a + 5b = 112.5....eq1
8a + 4b = 130 ......eq2
Eq2 x 1.25
10a + 5b = 162.5 .....eq3
eq3 - eq1
4a = 50
8a + 4b = 130
8(12.5) + 4b = 130
A
It's hard to see but when x is 6, y is 4.5. Just plug that into each equation and see which one is correct.
Answer: x + 2y = 4
x - x + 2y = -x + 4
2y = -x + 4
2 2
y = ⁻¹/₂x + 2
Answer:3948