Question 1013153
Why?  

This is another similar two-variable linear equation application exercise, but How many cups AND cones?  You need more information.  Account for the money and <s>account for the number of ice-cream items sold</s>.
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x for how many cups of ice-cream
y for how many cones of ice-cream


The money:
{{{0.6x+1.12y=287.50}}}
That is all you can do other than re-stating using rational coefficients.  You can simplify this equation and maybe graph the line to see all the possible combinations  (WHOLE NUMBERS) for x and y, but the equation could have more than one pair of whole-valued  x & y combinations.


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NOTE!  I AM TRYING TO KEEP YOU INFORMED AND INSTRUCTED!!