Question

My friend sets out walking at a speed of 3 miles per hour. I set out behind her 5 minutes later at 4 miles per hour.
For how many minutes will my friend have been walking when I catch up to her?My friend sets out walking at a speed of $3$ miles per hour. I set out behind her $5$ minutes later at $4$ miles per hour.
When I start walking, how many miles has my friend traveled?

Answer 1

how many miles has my friend travelled

= 0.25 miles when he started walking

45 minutes travelled when he catch up her