Question 482164
Let s=number of shares
gross profit - profit of the reserved shares = 17400
(18759+40s)-15((18759+40s)/s)=17400
(18759+40s)-((281385+600s)/s)=17400
18759s+40s^2-281385-600s=17400s
40s^2+759s-281385=0
s^2+19s-7035
s=74.9 shares. (see below)
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Ed
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*[invoke quadratic "x", 1, 19, -7035]