document.write( "Question 866135: a wallet contains four $1 bills, two $5 bills, three $10 and one $20. find the expected value of randomly selecting a bill from the wallet. \n" ); document.write( "
Algebra.Com's Answer #522185 by Fombitz(32388)\"\" \"About 
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\"P%281%29=4%2F%284%2B2%2B3%2B1%29=4%2F10=2%2F5\"
\n" ); document.write( "\"P%285%29=2%2F10=1%2F5\"
\n" ); document.write( "\"P%2810%29=3%2F10\"
\n" ); document.write( "\"P%2820%29=1%2F10\"
\n" ); document.write( ".
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\n" ); document.write( "\"E=%284%2F10%29%281%29%2B%282%2F10%29%285%29%2B%283%2F10%29%2810%29%2B%281%2F10%29%2820%29\"
\n" ); document.write( "\"E=0.4%2B1%2B3%2B2\"
\n" ); document.write( "\"E=6.40\"\r
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