document.write( "Question 189575: find the total payment,giventhe cost,tax rate,and tip rate for $51.80,6.7%tax,20%tip \n" ); document.write( "
Algebra.Com's Answer #142251 by user_dude2008(1862)\"\" \"About 
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6.7% = 0.067 and 20% = 0.20\r
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\n" ); document.write( "\n" ); document.write( "Total Cost = Cost + Cost*(Tax Rate) + Cost*(Tip Rate) = Cost * (1 + Tax Rate + Tip Rate)\r
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\n" ); document.write( "\n" ); document.write( "Total Cost = Cost * (1 + Tax Rate + Tip Rate)\r
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\n" ); document.write( "\n" ); document.write( "Total Cost = 51.80 * (1 + 0.067+ 0.20)\r
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\n" ); document.write( "\n" ); document.write( "Total Cost = 51.80 * 1.267\r
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\n" ); document.write( "\n" ); document.write( "Total Cost = 65.6306\r
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\n" ); document.write( "\n" ); document.write( "Total cost is $65.63
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