The answer is simple:
Constraints:
C > 0, B > 0 their both greater than equal to if your wondering if it does not fit
C + B < 60 less than equal to
6c + 30 b < 600 less than equal to
Profit:
P( c, b) = 2.5c + 7.5 b
Answer is 50 cars and 10 buses, hope this helps and pls. give me brainliest if I deserved it!!