Respuesta :
12:4 can be simplified to 3:1, so now you have 3 kilometers per every 1 hour, you need to know how many kilometers she can do in 6 hours, so you just multiply 3 by 6 which is 18. As a ratio it would be 18:6.
Answer:
She will hike about 18 kilometers in 6 hours
Step-by-step explanation: