There are chickens angd rabbits in a cage and the number of number of rabbits is two times of the number of chickens. They have 210 legs in total. How

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1. Đáp án:

   Explanation of the solution steps:
     Call the rabbit number:x(con)(x>0)
   => The number of rabbit feet is: 2x(foot)
   => The number of chickens is: 2x(chickens)
   => The number of chicken feet is: x/2.2=x(foot)
   Since there are a total of 210 chicken and rabbit legs combined, the number of rabbits is:
   2x+x=210
   ⇒3x=210
   ⇒x=210/3=70
   So the rabbits are: 70 (rabit)

   Giải thích các bước giải:

    

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2. Đáp án:

    70

   Giải thích các bước giải:

    210:2:3*2

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