Three days ago, 10 customers at a snow-cone stand purchased a snow-cone, and 15 customers
did not purchase a snow-cone. What percentage of
the customers at this snow-cone stand purchased
a snow-cone?

The diagonals of a quadrilaretral intersect at (-1,4). one of the sides of the quadrilateral is bounded by (2,7) and (-3,5) determine the coordinates of the other side in order for the quadrilaretral to be a square.