document.write( "Question 815711: p&q can do a piece of work in 10 days, q&R in 12 days while p&R can do it in 12 days .in how many days p alone can do the work
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Algebra.Com's Answer #491292 by ankor@dixie-net.com(22740)\"\" \"About 
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p&q can do a piece of work in 10 days, q&R in 12 days
\n" ); document.write( " while p&R can do it in 12 days, in how many days p alone can do the work
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\n" ); document.write( "let the completed job = 1
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\n" ); document.write( "\"p&q can do a piece of work in 10 days,\"
\n" ); document.write( "\"10%2Fp\" + \"10%2Fq\" = 1
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\n" ); document.write( "q&R in 12 days
\n" ); document.write( "\"12%2Fq\" + \"12%2Fr\" = 1
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\n" ); document.write( " while p&R can do it in 12 days
\n" ); document.write( "\"12%2Fp\" + \"12%2Fr\" = 1
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\n" ); document.write( "in how many days p alone can do the work
\n" ); document.write( "we know that
\n" ); document.write( "\"12%2Fq\" + \"12%2Fr\" = \"12%2Fp\" + \"12%2Fr\"
\n" ); document.write( "if we subtract 12/r from both sides
\n" ); document.write( "\"12%2Fq\" = \"12%2Fp\"
\n" ); document.write( "therefore: q = p
\n" ); document.write( "Replace q with p in the 1st equation
\n" ); document.write( "\"10%2Fp\" + \"10%2Fp\" = 1
\n" ); document.write( "\"20%2Fp\" = 1
\n" ); document.write( "p = 20 days for p to do it alone\r
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