鸡兔同笼问题

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大家好,我想有一个不同的演讲,所以,我把一道数学题改成英文。下面,我考
大家的是一道鸡兔同笼的题目:笼子里有100只兔和鸡,共有260脚。
问题1:有多少只鸡?
问题2:有多少只兔?
问题3:我为什么要出这道数学题?

Everybody is good, I want to have a different address, so, I have a math
problem into English. Now, I take an examination of all is the topic of a chicken
with rabbit cage: 100 rabbit and chicken cages, a total of 260 feet.
Question 1: how many chickens?
Question 2: how many rabbit are there?
Question 3: why should I out this maths problem?