Question

Lilly starts hiking along a trail at 3 miles per hour. Dave starts hiking the same trail from the same starting point at 3.5 miles per hour. If Lilly walked 2 miles before Dave started hiking, will he catch up to her?

Answer 1

Explanation:

2 +3x = 3.5x

2 = 0.5x = 4

Dave will catch up to her after 4 hours