A can complete a work in m days and B can complete it in n days. How many days will it take to complete the work if both A and B work together ?

A can complete a work in m days and B can complete it in n days. H

1.	A can complete a work in m days and B can complete it in n days. How many days will it take to complete the work if both A and B work together ?
A.	( m + n ) days
B.	<table><tr><td rowspan="2"><img src="https://www.indiabix.com/_files/images/aptitude/1-sym-oparen-h1.gif"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2"> </td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-cparen-h1.gif"></td><td rowspan="2">days</td></tr><td align="center">m</td><td align="center">n</td></table>
C.	<table><tr><td rowspan="2"></td><td rowspan="2"><img src="https://www.indiabix.com/_files/images/aptitude/1-sym-oparen-h1.gif"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>m + n</center></td><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-cparen-h1.gif"></td><td rowspan="2">days</td></tr><td align="center">mn</td></table>
D.	<table><tr><td rowspan="2"></td><td rowspan="2"><img src="https://www.indiabix.com/_files/images/aptitude/1-sym-oparen-h1.gif"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>mn</center></td><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-cparen-h1.gif"></td><td rowspan="2">days</td></tr><td align="center">m + n</td></table>
Answer» E.

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A can complete a work in m days and B can complete it in n days. How many days will it take to complete the work if both A and B work together ?

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