document.write( "Question 117768: Researchers marked and released 36 pike in a pond. Later they counted 20 pike, 12 of which were marked. Estimate the pike population. Thanks \n" ); document.write( "
Algebra.Com's Answer #85747 by psbhowmick(878)\"\" \"About 
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Out of 20 pikes, 12 are marked and so (20 - 12 =) 8 are unmarked
\n" ); document.write( "The ratio of marked to unmarked pikes is 12:8.
\n" ); document.write( "The total no. of marked pikes in the pond is 36.\r
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\n" ); document.write( "\n" ); document.write( "Let the total no. of unmarked pikes in the pond be 'x'.
\n" ); document.write( "The ratio of marked pikes to unmarked pikes is constant.
\n" ); document.write( "So, \"36%2Fx+=+12%2F8\"
\n" ); document.write( "or \"x+=+36%2A8%2F12\"
\n" ); document.write( "or \"x+=+24\"\r
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\n" ); document.write( "\n" ); document.write( "So, total population of pikes = marked + unmarked pikes = 36 + 24 = 60.
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