Posted by **Sydney** on Wednesday, March 9, 2011 at 12:41pm.

Thank you so much, Ms. Sue. Is this correct? A family backpacking at yosemite took 5 hours to climb a mountain trail 7.5 km long. What was the family's average speed? I did it like this. speed=7.5km/5h = 1.5km over h. Is this right? Thank you - why am i so confused it seems easy, but i get mixed up

- science -
**Ms. Sue**, Wednesday, March 9, 2011 at 12:48pm
Yes, you're right -- and you're welcome.

I'm not a math teacher and I often am confused about how to solve a problem. However, I usually can estimate the answer. For instance if the trail were 5 km long, then obviously their average speed is 1 km per hour. So your answer of 1.5 km per hour for a longer trail must be right.

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