Answer:
see explanation
Step-by-step explanation:
Given that Mark has x wheels
Charles has 5 times what Mark has less 4, that is 5x - 4
Mitch has 3 times as many as Charles, that is 3(5x - 4)
Thus
Mark = x
Charles = 5x - 4
Mitch = 3(5x - 4) = 15x - 12
