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Maths Question~ 快...
發問:
In a zoo, there are 28 animals with 68 feet. If there are only hens and dogs, fin d the number of dogs.
最佳解答:
let A be the number of the dogs the 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~~
其他解答:
insufficient information
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