At a certain time in a deer park, the number of heads and the number of legs of deer and human visitors were counted and it was found that there were 39 heads and 132 legs. Find the number of deer and human visitors in the park. what value will be depicted if we take care of animals?

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Solution

Let number of visitors = x and number of deer = y.
x + y = 39 since 1 head per visitor and 1 head per deer
2x+4y = 132 since visitors have 2 legs and deer has 4 legs each
Substitute y = 39 -x into 2nd equation
2x+4(39-x) = 132
2x+156-4x = 132
156-2x= 132
2x = 156-132=24
x = 12
so y = 27
Answer: Human visitors = 12, deer = 27
I have not understood what you mean by "take care of animals"

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