# GMAT Question of the Day - DS Rate/Work - April 29th 2014

Three machines J, K, and L working simultaneously but independently at their respective rates can complete a certain task in 32 hours. What proportion of the completed task did machine K complete?

(1) Machines J and K working simultaneously but independently at their respective rates can complete the task in 48 hours.

(2) Machine J can complete the task in half the time that Machine L can complete the task.

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Here are another bunch of cooperative work and rate questions to practice on:

For more distance, work, and rate examples you can also check out our GMAT Question of the Day page

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