Question

Mr. Martin and his son Luke decide to walk a 12 kilometer trail. Mr Martin takes a 1-hour head start and walks at a pace of 3km/hr. Explain how fast like should walk to reach the end of the trail in 3 hours the same time as mr Martin

Answer 1

Answer: Sample Response: It will take Mr. Martin 4 hours to walk the trail, and Luke should walk faster than Mr. Martin. Using the equation 12 = (3)(x), Luke should walk 4 km/hr to finish the trail in 3 hours.

Its the edge2020 answer

Answer 2

4 km/h

Explanation:

If Mr. Martin has an hour headstart and is walking at a rate of 3km/h, that leaves him with 9 kilometers left to travel. If put into an equation,
`(3)/(9)=(x)/(12) \\` is the result. When cross multiplied, you would get 9x=36. Divide by nine and you get x=4km/h.