Word problem help?

Question

Two pedestrians simultaneously left two villages 27 km apart and walked towards each other. The first one walked 4 km per hour, and the second walked 6 km per hour. After how many hours did the pedestrians meet?

Answer 1

Let x = time it takes for the pedestrians to meet

 

Distance = (rate)(time)

 

When the pedestrians meet, the sum of their distances is 27 km

 

So, 4x + 6x = 27

 

            10x = 27

 

               x = 2.7 hours