A taxi cab charges $2.50 for the first mile and $0.35 for each quarter mile after that. Johns taxi ride to he airport was 15.75 miles. What was his fare?

2.50 + 0.35(15.75-1)*4 = $23.15

To calculate John's fare, we need to consider the cost for the first mile and the cost for each additional quarter mile.

1. First, let's calculate the cost for the first mile:
- The taxi charges $2.50 for the first mile, so the cost for the first mile is $2.50.

2. Next, let's calculate the cost for the additional miles (after the first mile):
- John's taxi ride is 15.75 miles.
- After the first mile, each quarter mile costs $0.35.
- To calculate the cost for the additional miles, we subtract the first mile from the total distance: 15.75 - 1 = 14.75 miles.
- Since the taxi charges $0.35 for every quarter mile, we multiply the additional miles by 4 to convert them to quarter miles: 4 * 14.75 = 59 quarter miles.
- The cost for the additional mileage is $0.35 per quarter mile, so we multiply the number of quarter miles by $0.35: 59 * $0.35 = $20.65.

3. Finally, let's calculate the total fare:
- The cost for the first mile is $2.50.
- The cost for the additional miles is $20.65.
- To find the total fare, we add the cost for the first mile and the cost for the additional miles: $2.50 + $20.65 = $23.15.

Therefore, John's fare for the taxi ride to the airport is $23.15.

To calculate John's fare, we need to determine the cost of the first mile and the cost of the remaining distance beyond the first mile.

First, let's calculate the cost of the first mile:
The taxi charges $2.50 for the first mile.

Next, let's calculate the cost of the remaining distance:
The total distance minus the first mile is 15.75 - 1 = 14.75 miles.
Since the taxi charges $0.35 for each quarter mile, we need to divide the remaining distance by 0.25 (the number of quarter miles in a mile):
14.75 / 0.25 = 59 quarter miles.

Now, let's calculate the cost of the remaining distance:
The taxi charges $0.35 for each quarter mile, so the cost of 59 quarter miles is 59 * $0.35 = $20.65.

Finally, let's calculate the total fare:
The cost of the first mile is $2.50 and the cost of the remaining distance is $20.65. So the total fare is $2.50 + $20.65 = $23.15.

Therefore, John's fare for the taxi ride to the airport is $23.15.

there both are correct.