document.write( "Question 1146053: Mary works 2.5 times faster than Peter. Together, they do a job in 12.5 hours. How long does it take Mary working alone to do the same job?
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Algebra.Com's Answer #767332 by josgarithmetic(39620)\"\" \"About 
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Mary's rate r
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\n" ); document.write( "\n" ); document.write( "\"r%2B0.4r=1%2F12.5\"\r
\n" ); document.write( "\n" ); document.write( "\"1.4r=1%2F12.5\"\r
\n" ); document.write( "\n" ); document.write( "\"r=1%2F%281.4%2A12.5%29\"\r
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\n" ); document.write( "\n" ); document.write( "TIME in hours is \"1.4%2A12.5=highlight%28highlight%2817.5%29%29\"
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