Question 503238
At the dog park their are several dogs with their owners. Counting heads, there are 12, counting legs, there are 38. How many dogs and owners are there? 
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Equations:
d + w = 12
4d+2w = 38
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Multiply thru 1st equation by 2:
2d + 2w = 24
4d + 2w = 38
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Subtract and solve for "d":
2d = 14
d = 7 (# of dogs)
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Solve for "w":
d + w = 12
7 + w = 12
w = 5 (# of owners)
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Cheers,
Stan H.
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