// In the fifth and final installment of Knewton’s Intro to GMAT Quant Lesson, expert teachers Jess and Rich give you a chance to try out some tricky Data Sufficiency questions involving ratios. They’ll also talk about proportions, and give you a list of common powers and common decimal-fraction-percentages equivalencies to memorize in order to save time on test day. If you missed any of the previous lessons, be sure to check them out here!

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