For a ride on a rental scooter, Trey paid an $8 fee to start the scooter plus 6 cents per minute of the ride. The total bill for Trey's ride was .$16.16 For how many minutes did Trey ride the scooter?

1 answer

Let's say Trey rode the scooter for x minutes
The amount of money Trey paid per minute is 6 cents, so he paid 6*x = 6x cents for the minutes he rode the scooter.
Therefore, Trey's total bill is 8*100 + 6x = 800 + 6x cents. Now let's convert this to dollars: $8 + $0.06x
Since Trey's bill is $16.16, we get 8+0.06x = 16.16.
Now, we subtract 8 from both sides to get 0.06x = 16.16 - 8 = 8.16.
Now, we divide both sides by 0.06 to find that x = 8.16 / 0.06 = 136.
Therefore, Trey rode the scooter for 136 minutes. Answer: \boxed{136}.