Respuesta :
First, subtract $3.00 from $15.60 to find the amount of the charge due to miles.
$15.60 - $3.00 = $12.60
$12.60 was used to pay the miles traveled at $0.60 per mile.
Now we divide 12.60 by 0.60 to find the number of miles.
12.60/0.6 = 21
Answer: 21 miles