document.write( "Question 414585: A coin consists of 1/5 zinc, 1/10 manganese, and 1/40 copper. The rest of the coin is nickel. What fraction of the coin is nickel? \n" ); document.write( "
Algebra.Com's Answer #290820 by Gogonati(855)\"\" \"About 
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1-(1/5+1/10+1/40)=1-13/40=27/40
\n" ); document.write( "27/40 of a coin is nickel.
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