Question 1196591
<pre>
                  PRICE         QUANTITY           VALUE

SELL               p             n                 2880

REBUY              p-2           n+6               2880


To do tabulated data more simply

                PRICE             QTY.           VALUE

SELL           2880/n             n              2880

REBUY          2880/(n+6)        n+6             2880

DIFFERENCE        2
</pre>

{{{2880/n-2880/(n+6)=2}}}
Simplify and solve for n.