Agear ratio of the teeth on the front sprocket and the teeth on the rear sprocket . if a bike has 36 teeth on the front sprocket and 12 teeth on the rear sprocket, what is the gear ratio for the bike?

To figure this out you just divide the first number by the second number to get the ratio. So in this case you would take 36 and divide is by 12. So now you have 36/12 so the gear ration for the bike in question is going to be 3/1 or 3:1.

What do you mean i don’t understand

Yes you do, so £1973.09 - £1473.50 = £499.59 so tim overpaid £499.59 .hope this ; )