Running at their respective constant rates, machine X takes 2 days longer to produce w widgets than machines Y. At these rates, if the two machines together produce 5w/4 widgets in 3 days, how many days would it take machine X alone to produce 2w widgets. GMAT Explanation

Running at their respective constant rates, machine X takes 2 days longer to produce w widgets than machines Y. AT these rates, if the two machines together produce 5w/4 widgets in 3 days, how many days would it take machine X alone to produce 2w widgets.

A. 4
B. 6
C. 8
D. 10
E. 12

This is one of the toughest work and rate questions in the GMAT universe and in the private tutoring program we only use it as a learning question without any expectations that a student will get it on their own.

If you feel challenged by this: that’s OK. You can still get a 750 skipping a question like this one.

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