SOLUTION: In a farm the number of chickens were 100% more than the cows. If there were 640 legs altogether how many chickens were there?

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Question 1174418: In a farm the number of chickens were 100% more than the cows. If there were 640 legs altogether how many chickens were there?
Answer by ikleyn(52799) About Me  (Show Source):
You can put this solution on YOUR website!
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Let x be the number of cows.

Then the number of chickens is 2x, according to the condition.


Counting the legs, you have this equation


    4x + 2*(2x) = 640,   or


    4x + 4x = 640

      8x    = 640

       x    = 640/8 = 80.


ANSWER.  80 cows.

Solved, explained, answered and completed.

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