Answer: The amount of money spent on gold star rides is $24.
Explanation: Let, 'x' and 'y' denotes the number of premium rides and gold star rides respectively.
Then, according to the given information, we have

Substituting the value of 'x' from equation (ii) in equation (i), we get

So, the number of gold star rides = 4.
Therefore, the total amount of money that spent on gold star rides
= $(3 × 8)
= $ 24.
Thus, the answer is $ 24.