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In this case, "reduce" and "aid" are not plural because you also have the auxiliary verb "may". This works for singular or plural subjects:

He may run the marathon tomorrow.

Students may use the study rooms in the library.

by [email protected]

Thu May 01, 2014 9:25 pm
Forum: Sentence Correction
Topic: Subject - Verb Agreement
Replies: 5
Views: 1610

aditya8062 wrote:the usage of adverb "recently" is also wrong in option B and C
A good point.

"Recent prolonged slump" means that the slump was recent AND prolonged.

"Recently prolonged slump" means that the slump was somehow extended.


I think it's more that I learned from the best :D

by [email protected]

Wed Apr 30, 2014 4:49 pm
Forum: GMAT Strategy
Topic: Veritas on-demand course VS Manhattan GMAT guided self-study
Replies: 18
Views: 10646

Conclusion: Airlines will purchase many 500+ seater planes. Premises: 1. They currently use the hub and spoke system: large planes bring lots of passengers to hubs, small planes take passengers from hubs to local airports. 2. There is little room for growth in takeoff and landing slots as well as ru...

by [email protected]

Wed Apr 30, 2014 3:40 pm
Forum: Critical Reasoning
Topic: weaken argument
Replies: 3
Views: 1552

Yeah, it's a little weird. I think this is from 1000SC, which is not a great source.

by [email protected]

Wed Apr 30, 2014 3:31 pm
Forum: Sentence Correction
Topic: unlike
Replies: 12
Views: 4152

We're comparing the grassy fields to the sandpipers. Wait, how can we compare grass to birds? That doesn't seem to make any sense, but we can do it in this case because they share a specific similarity: they are both vanishing.

by [email protected]

Wed Apr 30, 2014 3:28 pm
Forum: Sentence Correction
Topic: Comparison - Sandpipers
Replies: 4
Views: 1368

For clarity's sake: Like the grassy fields and old pastures that the upland sandpiper needs for feeding and nesting when it returns in May after wintering in the Argentine Pampas, the sandpipers vanishing in the northeastern United States is a result of residential and industrial development and of ...

by [email protected]

Wed Apr 30, 2014 3:26 pm
Forum: Sentence Correction
Topic: Comparison - Sandpipers
Replies: 4
Views: 1368

The present perfect "have fallen" would place the decrease in revenue after the past tense "announced". Because the revenue drop caused the announcement, this order of events does not work.


From the stem, you know that you're comparing .6A to 1.2B. If A=4B, simply plug in for A:

.6A = .6(4B) = 2.4B

2.4B is 200% of 1.2B.

Statement 2 gives you A in terms of B. Let A=20 and B = 5.

.6A = .6*20 = 12

1.2B = 1.2*5 = 6

12 is 200% of 6.


Rich's explanation is great. I think this question is a great example of using simple examples (like testing simple perfect squares to see what the rule is) to unlock a harder question.


I'll second David's recommendation. It's what I recommend to my students as well.

by [email protected]

Wed Apr 30, 2014 3:09 pm
Forum: GMAT Strategy
Topic: Veritas on-demand course VS Manhattan GMAT guided self-study
Replies: 18
Views: 10646

Using the "tug of war" method, we can figure out the ratio of X to Y from the stem alone: Y X 2--5----10 5-2 = 3 10-5 = 5 X:Y = 3:5 Now we just need something that will allow us to go from a proportion to an exact value. 1) Perfect! Using the ratio above, we can determine that x is 6 . 2) This works...

by [email protected]

Tue Apr 29, 2014 2:03 pm
Forum: Data Sufficiency
Topic: Mixtures
Replies: 1
Views: 819

The bar show year-over-year changes. For example, 2000's bar is approximately 4%. This means that the CPI was 4% higher in 2000 than it was in 1999. 1. Between 2000 and 2003, there were two years at ~5% increase and one year at ~4% increase. 2003 is higher than 2000. 2. Since we see positive changes...


1. Productivity is the blue bar, and we see a 1 percent increase in 2008. more

2. Unit labor costs went up by >2% per year for three years, then decreased by <2% for two years. The decrease will not outweigh the increase. higher

3. All five years show positive growth for productivity. 5

by [email protected]

Mon Apr 28, 2014 1:20 pm
Forum: GMAT Integrated Reasoning
Topic: Annual % change in Prod. and unit labor cost
Replies: 1
Views: 3373