SOLUTION: At 9 am, Bill begins walking west at 4 miles per hour. At 9:30 am Sam begins walking south from the same starting point at 4 miles per hour. How far apart are Bill and Sam at 11 am

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Question 734544: At 9 am, Bill begins walking west at 4 miles per hour. At 9:30 am Sam begins walking south from the same starting point at 4 miles per hour. How far apart are Bill and Sam at 11 am?

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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At 9 am, Bill begins walking west at 4 miles per hour.
At 9:30 am Sam begins walking south from the same starting point at 4 miles per hour.
How far apart are Bill and Sam at 11 am?
:
From the information given, we know that:
B's walking time = 2 hrs, therefore 2*4 = 8 mi his distance west
S's walking time = 1.5 hrs, therefore 1.5*4 = 6 mi his distance south
:
The distance between them will the the hypotenuse of a right triagle
with legs of 8 and 6
d = sqrt%288%5E2%2B6%5E2%29
d = 10 mi between them