SOLUTION: To determine the number of trout in a lake, a conservationist catches 125 trout , tags them, and releases them. Later 112 trout are caught, and it is found that 62 of them are tage

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Question 832076: To determine the number of trout in a lake, a conservationist catches 125 trout , tags them, and releases them. Later 112 trout are caught, and it is found that 62 of them are taged. Estimate how many trout there are in the lake ?
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
The actual fraction of tagged trout is 125/p, using p = trout population of the lake.

The later sampling of 112, containing 62 tagged trout gives you a ratio which is very close-to the 125/p ratio.

125%2Fp=62%2F112
p%2F125=112%2F62
p=125%2A112%2F62
p+=+225 or p=226 trout.