Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack

 It is currently 22 May 2017, 13:40

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# Six qualified workers can cast 10.000 tons of raw copper in

Author Message
SVP
Joined: 03 Feb 2003
Posts: 1604
Followers: 9

Kudos [?]: 268 [0], given: 0

Six qualified workers can cast 10.000 tons of raw copper in [#permalink]

### Show Tags

28 Jun 2003, 23:20
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 100% (00:00) wrong based on 1 sessions

### HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Six qualified workers can cast 10.000 tons of raw copper in 2 hours. Two apprentices who work 2/3 as fast as a qualified worker are added to the group. Finally, the work is done. How much time has been saved due to the apprentices?
Manager
Joined: 24 Jun 2003
Posts: 146
Location: India
Followers: 2

Kudos [?]: 2 [0], given: 0

### Show Tags

29 Jun 2003, 01:25
With the new workers, the 10.000 tons of raw copper can be cast in 1,63 hours as compared to 2 hours earlier. Therefore 0,37 hours have been saved
SVP
Joined: 03 Feb 2003
Posts: 1604
Followers: 9

Kudos [?]: 268 [0], given: 0

### Show Tags

29 Jun 2003, 23:54
10000=6R2=(6R+4/3R)T, where T=18/11

The time saving = 2–(18/11)=4/11
29 Jun 2003, 23:54
Display posts from previous: Sort by