Question 495193
Let {{{n}}} = number of rooms rented
It looks like the figure $28,800 is a fixed price
for the function rooms 
given:
{{{ 28800 / n }}} = rent for 1 room
{{{ ( (28800/n) - 20) *6 = 28800 }}}
{{{ 172800/n - 1200 = 28800 }}}
{{{ 172800 - 1200n = 28800n }}}
{{{ 28800n + 1200n = 172800 }}}
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Are you sure the problem was copied right?
I get an answer that makes sense if 600 instead of
6 rooms were rented