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Puzzle - Answer

HenA hen and a half will lay an egg and a half in a day and a half.

How many eggs would six hens lay at the same rate in six days?

 [Ref: ZPZF] © Kevin Stone

Answer: 24.

We are told that:

   1.5 hens will lay 1.5 eggs in 1.5 days.

We can double the chickens (which doubles the eggs):

   3 hens will lay 3 eggs in 1.5 days.

We can double the chickens again:

   6 hens will lay 6 eggs in 1.5 days.

We can now multiply the number of days by 4 (which multiplies the number of eggs by 4).

   Therefore 6 hens will lay 24 eggs in a 6 days.

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