Question 671630
Looks like the right equation
{{{ 14850000 / ( p + 2200 ) = 14850000 / p - 75 }}}
Multiply both sides by {{{ p*( p + 2200 ) }}}
{{{ 14850000p = 14850000*( p + 2200 ) - 75p*( p + 2200 ) }}}
{{{ 14850000p = 14850000p + 2200*14850000 - 75p^2 - 165000p ) }}}
{{{ 75p^2 + 165000p - 32670000000 = 0 }}}
Divide through by {{{ 75 }}}
{{{ p^2 + 2200p = 435600000 }}}
Complete the square
{{{ p^2 + 2200p + ( 2200/2 )^2 = 435600000 + ( 2200/2 )^2 }}}
{{{ p^2 + 2200p + 121000 = 435600000 + 121000 }}}  
{{{ p^2 + 2200p + 121000 = 435721000 }}}  
{{{ ( p + 1100 )^2 = 435721000 }}}
{{{ p + 110 = 20873.9 }}}
{{{ p = 20764 }}}
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check answer:
{{{ 14850000 / ( p + 2200 ) = 14850000 / p - 75 }}}
{{{ 14850000 / ( 20763.9 + 2200 ) = 14850000 / 20763.9 - 75 }}}
{{{ 14850000 / 22963.9 = 14850000 / 20763.9 - 75 }}}
{{{ 646.66716 = 715.18356 - 75 }}}
{{{ 646.66716 = 640.18356 }}}
this is close, but I went off somewhere
maybe you can see it.