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

 It is currently 29 May 2017, 07:15

### 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

# M20-03. If 2 excavators can dig a 10-meter long trench in 50

Author Message
Math Expert
Joined: 02 Sep 2009
Posts: 39050
Followers: 7753

Kudos [?]: 106531 [0], given: 11627

M20-03. If 2 excavators can dig a 10-meter long trench in 50 [#permalink]

### Show Tags

23 May 2014, 09:58
If 2 excavators can dig a 10-meter long trench in 50 minutes, how long will it take 3 excavators to dig a 15-meter long trench? (Assume the excavators are working at the same constant rates)

A. 45 minutes
B. 50 minutes
C. 52 minutes
D. 54 minutes
E. 60 minutes
_________________
Math Expert
Joined: 02 Sep 2009
Posts: 39050
Followers: 7753

Kudos [?]: 106531 [0], given: 11627

Re: M20-03. If 2 excavators can dig a 10-meter long trench in 50 [#permalink]

### Show Tags

23 May 2014, 09:59
Official Explanation:

If 2 excavators can dig a 10-meter long trench in 50 minutes, how long will it take 3 excavators to dig a 15-meter long trench? (Assume the excavators are working at the same constant rates)

A. 45 minutes
B. 50 minutes
C. 52 minutes
D. 54 minutes
E. 60 minutes

1 excavator can dig a 10-meter long trench in $$50*2=100$$ minutes. So, it can dig a 15-meter long trench in $$100*1.5=150$$ minutes.

Hence, 3 excavators can dig a 15-meter long trench in $$\frac{150}{3}=50$$ minutes.

_________________
Re: M20-03. If 2 excavators can dig a 10-meter long trench in 50   [#permalink] 23 May 2014, 09:59
Similar topics Replies Last post
Similar
Topics:
If the blades of a windmill are 10 meters long each and the 1 18 Aug 2014, 04:36
GMAT Tricks: Essential to score q50+ 0 30 Nov 2012, 09:54
5 Access on GMATCLUB tests..50+ KUDOS 2 11 Dec 2011, 07:14
16 m04q36- Fish that had a 60 foot long head 22 31 Mar 2014, 16:00
PS: Can you do this under 2 minutes? (m07q17) 10 28 Jun 2011, 23:00
Display posts from previous: Sort by

# M20-03. If 2 excavators can dig a 10-meter long trench in 50

Moderator: Bunuel

 Powered by phpBB © phpBB Group and phpBB SEO Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.