document.write( "Question 552355: The weight of a tree is doubling every 3 years. In how many years will the weight of the tree be 1600% of its wieght now? \n" ); document.write( "
Algebra.Com's Answer #360221 by Alan3354(69443)\"\" \"About 
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The weight of a tree is doubling every 3 years. In how many years will the weight of the tree be 1600% of its wieght now?
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\n" ); document.write( "1600% is 16 times its present weight.
\n" ); document.write( "16 = 2^4, so that's four periods.
\n" ); document.write( "4*3 = 12 years
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