SOLUTION: 9 hens can lay 9eggs in 9 days. How many eggs can lay by 3 hens in 3 days?

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Question 1059380: 9 hens can lay 9eggs in 9 days. How many eggs can lay by 3 hens in 3 days?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
Constant Rate Rule; not yet known is the lay rate for 1 hen. Let this rate be r.

Rate unit should be EGGS%2FDAY. Each hen lays eggs at the same rate.

system%289r%2A9=9%2C3r%2A3=x%29------system is the transcription of first sentence, and second sentence; x is the unknown number of eggs.



r=9%2F%289%2A9%29
r=1%2F9
-
x=3r%2A3
x=3%281%2F9%29%2A3
x=%283%2A3%29%2F9
x=1--------------That's all. Just one single egg.


If this were practical, some averaging would need to be happening.