SOLUTION: there are 100 animals in a shleter, some are dogs, some are birds. there are 360 total legs at the shelter. how many of each type of animal are at the shelter?

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Question 1159016: there are 100 animals in a shleter, some are dogs, some are birds. there are 360 total legs at the shelter. how many of each type of animal are at the shelter?
Answer by mananth(16946) About Me  (Show Source):
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there are 100 animals in a shelter, some are dogs, some are birds. there are 360 total legs at the shelter. how many of each type of animal are at the shelter?
let number of dogs be x
number of birds be y
there are 100 animals in a shelter,
x+y=100
there are 360 total legs
4x+2y=360
divide by 2
2x+y = 180
x+y=100
x+y=100
x=80 (dogs)
20 birds