Huey's Hip Pizza sells two sizes of square pizzas: a small pizza that measures 12 inches on a side and costs $10, and a large pizza that measures 18 inches on a side and costs $20. If two friends go to Huey's with $30 apiece, how many more square inches of pizza can they buy if they pool their money than if they each purchase pizza alone? Pick one
A) 5 square inches  B) 36 square inches  C) 15 square inches  D) 25 square inches  E) 350 square inches
In the first case each can buy one pizza of $10 and one pizza of $20.   In square inches that would be (12*12=144) for the small pizza and (18*18=324) for the large pizza. In total sq inches that would be  (144+324)*2= 
<gadget id="calculator"> (144+324)*2</gadget>
<output>936</output>
936 sq inches.   In the second case if they pool their money together they can buy 3 large pizzas. In terms of square inches that would be   3*324= 
<gadget id="calculator">  3*324</gadget>
<output>972</output>
972 sq inches.   Hence, the difference is 36 square inches more (972-936).   The correct answer is 36 square inches
<result>B</result>
Huey's Hip Pizza sells two sizes of square pizzas: a small pizza that measures 12 inches on a side and costs $10, and a large pizza that measures 18 inches on a side and costs $20. If two friends go to Huey's with $30 apiece, how many more square inches of pizza can they buy if they pool their money than if they each purchase pizza alone?