There are 49birds and hares.A bird has two legs and a hare has four.There are 100 legs in all.

There are 49birds and hares.A bird has two legs and a hare has four.There are 100 legs in all.

题目
There are 49birds and hares.A bird has two legs and a hare has four.There are 100 legs in all.
There are 100 legs in all.How many birds and how many hares?
答案
48 birds and 1 hare.
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