Answer:
c 15 business class and 12 economy class
Step-by-step explanation:
We can set up a system of equations.
First, we choose the variables and define them.
Let x = number of $375 tickets.
Let y = number of $700 tickets.
Equation of number of tickets:
x + y = 27
Equation of costs of tickets:
375x + 700y = 15000
Now we solve the system of equations by the addition method.
Multiply both sides of the top equation by -375 and write it below the second equation. Then add the equations.
375x + 700y = 15000
(+) -375x - 375y = -10125
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325y = 4875
y = 15
x + y = 27
x + 15 = 27
x = 12
Answer: 15 business tickets and 12 economy tickets
