Question 558043
Charlie has 11 animals at home, consisting of dogs and parrots. If there are 38 legs total, how many dogs does he have?
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Animal count: d + p = 11
Leg count::: 4d + 2p = 38
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Multiply thru the Animal count equation by 4 to get:
4d + 4p = 44
4d + 2p = 38
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Subtract and solve for "P":
2p = 6
p = 3 (# of parrots)
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Solve for "d":
d + p = 11
d + 3 = 11
d = 8 (# of dogs)
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Cheers,
Stan H.
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