A boat filled can carry 6 smart cars and 7 Toyota's or 8 smart cars and 4 Toyota's. If the ferry boat were to only carry toyotas what is the maximum number of toyotas aboard the ferry

16

Step-by-step explanation:

Let S is smart car and T is Toyota car

Case 1: 6 smart cars and 7 Toyota's = 6S + 7T

Case 2: 8 smart cars and 4 Toyota's

When 2 smart cars increase = 3 Toyota's cars descrease

So the ratio between them is:

2S = 3T

S = 3/2T

so the maximum number of toyotas aboard the ferry

6*3/2T + 7T = 16 T