Answer:
To maximize the income should be 30 buses and 150 cars
Step-by-step explanation:
Let
x-----> the number of cars
y ----> the number of bus
we know that
------> inequality A
----> inequality B
The function of the cost to maximize is equal to
Solve the system of inequalities by graphing
The solution is the shaded area
see the attached figure
The vertices of the solution are
(0,0),(0,53),(150,30),(180,0)
<em>Verify</em>
(0,53) --->
(150,30) --->
therefore
To maximize the income should be 30 buses and 150 cars