Question

Please help !! i need to know how to solve it.

Answer 1

We can determine the value of the adult ticket cost and student ticket cost by following these steps:

1. solve form one of the variables from one of the equations

Let's solve for a from 2a + 2s = 40

2a + 2s = 40

2a + 2s - 2s = 40 - 2s

2a = 40 - 2s

2a/2 = 40/2 - 2s/2

a = 20 - s

2. Replace the expression found and solve for s

4a + 5s = 87

4(20 - s) + 5s = 87

4×20 - 4×s + 5s = 87

80 - 4s + 5s = 87

80 + s = 87

80 - 80 + s = 87 - 80

s = 7

3. Replace 7 for s into a = 20 - s

a = 20 - 7

a = 13

Then, a = 13 and s = 7.

Then the adult ticket cost is $13 and the student ticket cost is $7