Search found 22 matches
D. He's contesting the argument that # of letters delivered is the only important factor when measuring productivity
- by briology
Thu Oct 06, 2011 5:02 pm- Forum: Critical Reasoning
- Topic: Postal Service
- Replies: 10
- Views: 2229
Even after seeing the answer I still find this question confusing. Why is the $.80 not used in the discounted option, e.g 25+.6*3*1.60+.6*57*.80? What constraint prevents that from being the cheapest option?
- by briology
Thu Oct 06, 2011 10:06 am- Forum: GMAT Math
- Topic: Sometimes I just don't get what the question is asking...
- Replies: 2
- Views: 1290
- by briology
Sat Sep 24, 2011 1:50 am- Forum: Problem Solving
- Topic: Difficult PS Q?
- Replies: 8
- Views: 1228
- by briology
Fri Sep 23, 2011 11:42 pm- Forum: Problem Solving
- Topic: Difficult PS Q?
- Replies: 8
- Views: 1228
Difficult PS Q?
Hi All-- I got this problem during a practice test today. Train M and Train N are traveling in the same direction on parallel sets of tracks. Train M is traveling at 2^m miles per hour, and Train N is traveling at 2^n miles per hour, with N>M. If Train M is initially 2^m+1 miles ahead of Train N, ho...
- by briology
Fri Sep 23, 2011 10:55 pm- Forum: Problem Solving
- Topic: Difficult PS Q?
- Replies: 8
- Views: 1228
Thank you both for the replies! Although I'm still not 100% sure why you can't say 3x=12, when you know the increase was 12 and nothing changes except x becomes 3x
- by briology
Fri Sep 23, 2011 2:37 pm- Forum: Problem Solving
- Topic: Statistics Problem
- Replies: 3
- Views: 1106
Statistics Problem
The average of 5 numbers is 6.8. If one of the numbers is multiplied by a factor of 3, the average of the numbers increases to 9.2. What number is multiplied by 3? a. 1.5 b. 3.0 c. 3.9 d. 4.0 e. 6.0 This problem is a bit confusing for me. I understand how to solve it now (setup two equations), but s...
- by briology
Fri Sep 23, 2011 11:01 am- Forum: Problem Solving
- Topic: Statistics Problem
- Replies: 3
- Views: 1106