Each week, we post a new Challenge Problem for you to attempt. If you submit the correct answer, you will be entered into that week’s drawing for two free Manhattan Prep GRE Strategy Guides.

y> 9

z> 2Quantity A

x^{2}yz“ 8x^{2}z+ 3yz“ 24zQuantity B

0

See the answer choices and submit your pick over on our Challenge Problem page.