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. When I start walking, how many miles has my friend traveled?

Answer 1

0.25

Explanation:

Answer 2

Answer: The answer is 0.25 miles.

Step-by-step explanation: Given that my friend started walking at a speed of 3 miles per hour and I started 5 minutes after him at a speed of 4 miles per hour. We need to find the number of miles my friend travelled when I started walking.

Since I started 5 minutes after than my friend, so we are to find the distance travelled by my friend in 5 minutes.

In 1 hour, i.e., 60 minutes, distance travelled by my friend = 3 miles.

In 1 minute, distance travelled by my friend is

`(3)/(60)=(1)/(20)~\textup{miles}.`

Therefore, distance travelled by my friend in 5 minutes will be

`(1)/(20)* 5=(1)/(4)=0.25~\textup{miles}.`

Thus, the answer is 0.25 miles.