Question 309010
x = number of watermelons


" She priced the melons so that she would make $1.50 profit on each melon" ___ p = (200/x) + 1.50


"When all but 30 had been sold, the manager had recovered her initial investment" ___ (x-30)(p) = 200


200x - 6000 + 1.5x^2 - 45x = 200x ___  x^2 - 30x - 4000 = 0


factoring ___ (x - 80)(x + 50) = 0


x = 80