In a zoo, there are 28 animals with 68 feet. If there are only hens and dogs, fin
d the number of dogs.
Maths Question~ 快...
2008-12-08 11:06 pm
回答 (2)
2008-12-08 11:12 pm
✔ 最佳答案
let A be the number of the dogsthe number of hens will be 28-A(coz there are 28 animals)
each dog has 4 legs and each hen has 2 legs
so we have 4A+2(28-A)=68
4A+56-2A=68
2A=12
A=6
there is 6 dogs in the zoo~~
2008-12-08 11:10 pm
insufficient information
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