GMATPrep Question

jaydeer44 · Posted: Fri May 09, 2008 2:25 pm Post subject: GMATPrep Question

Can someone help explain how to solve this problem? The Answer is E.

Machines X and Y work at their respective constant rates. How many more hours does it take machine Y, working alone, to fill a production order of a certain size than it takes machine X, working alone?

(1) Machines X and Y, working together, fill a production order of this size in two-thirds the time that machine X, working alone, does.

(2) Machine Y, working alone, fills a production order of this size in twice the time that machine X, working alone, does.

akshatsingh · Posted: Sun May 11, 2008 11:09 pm Post subject:

I think both the statements will only give the ratio, of times of X and Y and not necessarily the exact time taken by each.

The answer should be E.