Question 1181029
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I do not see any logic in the solution by @mananth,  who converts and uses densities from given units to some other units.



The problem does not ask to do it,  and this style only  DISTRACTS  attention from real solution.



<H3>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Making unnecessary work does not add value to the tutors' solutions (!)


&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;It works in opposite direction.</H3>