Respuesta :
Answer:
3 hours
Step-by-step explanation:
20 ÷ 5 = 4 mph
12 ÷ 4 = 3 hours
hope this explanation makes sense! :)
Answer:
9 hour
Step-by-step explanation:
sara hikes 20 mile in 5 hour
then, sara takes 5\20 hour to hike 1 mile
again if she hike 1 mile in 5\20 hour
then she to hike 12 mile she takes 5x12\20 = 9 hour