document.write( "Question 754391: A piggy bank contains exactly $50 in $1 and $2 coins.
\n" ); document.write( "Fanny counted 30 coins.
\n" ); document.write( "Frank counted 31 coins.
\n" ); document.write( "Who's right? \n" ); document.write( "
Algebra.Com's Answer #459044 by dkppathak(439)\"\" \"About 
You can put this solution on YOUR website!
let $1 is x coins
\n" ); document.write( "and as per fanny case
\n" ); document.write( "$2 are 30-x coins
\n" ); document.write( "x+2(30-x)=50
\n" ); document.write( "x+60-2x =50
\n" ); document.write( "-x=-10
\n" ); document.write( "x=10
\n" ); document.write( "so $1 are 10 coins
\n" ); document.write( "and $2 20 coins
\n" ); document.write( "as per frank case
\n" ); document.write( "let $1 is x coins and
\n" ); document.write( "$2 are 31-x coins
\n" ); document.write( "x+2(31-x)=50
\n" ); document.write( "x+62-2x =50
\n" ); document.write( "-x=-12
\n" ); document.write( "x=12
\n" ); document.write( "$2 coins will be 19 coins
\n" ); document.write( "in this problem
\n" ); document.write( "both counting are correct for given conditions
\n" ); document.write( "for fanny 30 coins $1 are 10 coins and $2 are 20 coins
\n" ); document.write( "and as per frank counting
\n" ); document.write( "$1 coins will be 12 and
\n" ); document.write( "$2 coins will be 19
\n" ); document.write( "answer
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