6.7k views
1 vote
Sarah walks uphill at an average of 2 miles per hour, and downhill at an average of 4 miles per hour. She goes for a 6 mile hike up a hill, and then returns downhill by the same route. What is Sarah's average speed for the whole journey?

User Seramme
by
4.0k points

2 Answers

5 votes

Answer:

Average of 3mph

Explanation:

If Sarah goes uphill at 2mph and downhill at 4mph.

Then to find the average you can:

Add 2 plus 4

which equals 6

Then divide the sum of 6 by the number of values given, there are two values (2 and 4)

6 divided by 2 equals 3

So the average is 3mph

User Rohanil
by
4.1k points
2 votes

Answer:

48

Explanation:

User John Deighan
by
4.6k points