document.write( "Question 768615: If John completes 5 tasks in 15 minutes and Bob completes 5 tasks in 35 minutes, how long will it take them to complete 5 tasks if they work together? \n" ); document.write( "
Algebra.Com's Answer #468410 by oscargut(2103)\"\" \"About 
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1/(1/15+1/35) = 10.5\r
\n" ); document.write( "\n" ); document.write( "Answer: 10.5 minutes\r
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