"Work Rate" questions are a common feature of the GRE Quant section. Success depends on quickly choosing the right framework and using logical shortcuts to save time. This guided path will teach you the core methods and advanced strategies you need.
Start with the fundamental principle: converting a total time to complete a job into a rate of work per unit of time (e.g., per hour or day).
Learn how to handle common GRE scenarios with opposing forces, like a draining pipe, by simply using a negative rate.
Use the concept of "Total Effort" as a powerful shortcut for problems involving groups of workers, a common GRE word problem format.
Master the elegant formula for solving complex problems where both the inputs (workers, time) and the output (work done) change.
Learn the three-step process to solve problems that compare the relative efficiency of different workers using ratios.
Learn to solve QC work-rate problems with logical reasoning, which is often much faster than using the on-screen calculator.
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