GMAT Prep2(Bottles)

This topic has expert replies
Source: — Problem Solving |

Master | Next Rank: 500 Posts
Posts: 192
Joined: Tue Apr 29, 2008 7:41 am
Thanked: 14 times

by aatech » Wed May 14, 2008 10:41 am
in 6 hours machine x produces K bottles

so, in 1 hour it will produce K/6 bottles

Similarly, in 1 hour machine y will produce K/2 bottles

Together, in 1 hour they will produce K/6 + K/2 = 4K/6 bottles

4K/6 bottles can be produced in 1 hour

1 bottle can be produced in 6/4K hours

12K bottles will be produced in [6*12K]/4K = 18