At certain time in a deer park there were 45 heads and 146 legscounting both the deer and human visitors.how many deers and how many human visitors were there
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Answer:
heads=45
legs=146
human has 2 legs and feet has 4 legs
head and legs of humans =x
head and legs of deer=y
x+y=45. (1)
legs of human=2x
legs of deer=4y
2x+4y=146. (2)
multiply by 4 to equation (1),
4x+4y=180. (3)
subtract equation (2) from equation (3),
2x=34
x=17
put value of x in equation (1),
17+y=45
y=28
hence no. of humans=17
no. of deers=28
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