Question 1129103
A new type of pump can drain a certain pool in 9 hours. An older pump can drain the pool in 11 hours. How long will it take both pumps working together to drain the pool?
<pre><b><u>BE FOREWARNED!!</b></u>
He's at it AGAIN!!! Yeah, the one with ARITHMETIC in his name. How IRONIC!! This is WRONG, so act as though no-one responded.
{{{cross(19/99)}}}



{{{HOURS/POOL}}}:

{{{cross(99/19)}}}

{{{cross(highlight(5&4/19))}}} {{{hours}}}