Events & Promotions
|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Nov 1912:30 PM EST
-01:30 PM EST
Learn how Keshav, a Chartered Accountant, scored an impressive 705 on GMAT in just 30 days with GMATWhiz's expert guidance. In this video, he shares preparation tips and strategies that worked for him, including the mock, time management, and more
Nov 2001:30 PM EST
-02:30 PM IST
Learn how Kamakshi achieved a GMAT 675 with an impressive 96th %ile in Data Insights. Discover the unique methods and exam strategies that helped her excel in DI along with other sections for a balanced and high score.
Nov 2211:00 AM IST
-01:00 PM IST
Do RC/MSR passages scare you? e-GMAT is conducting a masterclass to help you learn – Learn effective reading strategies Tackle difficult RC & MSR with confidence Excel in timed test environment- Nov 23
11:00 AM IST
-01:00 PM IST
Attend this free GMAT Algebra Webinar and learn how to master the most challenging Inequalities and Absolute Value problems with ease. 
Nov 2407:00 PM PST
-08:00 PM PST
Full-length FE mock with insightful analytics, weakness diagnosis, and video explanations!
Nov 2510:00 AM EST
-11:00 AM EST
Prefer video-based learning? The Target Test Prep OnDemand course is a one-of-a-kind video masterclass featuring 400 hours of lecture-style teaching by Scott Woodbury-Stewart, founder of Target Test Prep and one of the most accomplished GMAT instructors.
Dropdown 1: 2
Dropdown 2: From August to September
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
85%
(hard)
Question Stats:
45% (02:11) correct
55%
(02:56)
wrong
based on 227
sessions
History
Date
Time
Result
Not Attempted Yet
The graph above shows the rainfall in millimeters at two Florida lakes over a 12-month period, from April 2005 to March 2006. The amount of rainfall fluctuated significantly in both lakes during this time.
Select from each drop-down menu the option that creates the most accurate statement, given the information provided.
The combined rainfall exceeds 400mm for exactly months.
The greatest percentage drop in combined rainfall occurred from .
Attachment:
Abc.jpg [ 69.04 KiB | Viewed 6114 times ]
ShowHide Answer
Official Answer
Dropdown 1: 2
Dropdown 2: From August to September
22 Nov 2024, 00:33
Kudos
Bookmarks
Bunuel
Official Solution:
Drop-down 1:
If both lakes had rainfall of less than 200mm in a month, then their combined rainfall obviously cannot exceed 400mm. Using this, we can immediately eliminate 9 out of 12 months. From the remaining three months — June, August, and October — only the first two have combined rainfall exceeding 400mm.
Drop-down 2:
There are three real contenders for the correct answer:
- From June to July, the drop is from approximately 550mm to 300mm, which is less than 2 times.
- From August to September, the drop is from approximately 450mm to 100mm, which is about 4.5 times.
- From October to November, the drop is from approximately 300mm to 100mm, which is about 3 times.
Thus, the largest drop is from August to September.
Correct answer:
Dropdown 1: "2"
Dropdown 2: "From August to September "
General Discussion
03 Jan 2025, 17:07
Kudos
Bookmarks
Part 1. The combined rainfall exceeds 400mm for exactly ___ months.
1. Months with less than 200 in both values (columns) won't work since the sum will be less than 200 + 200 = 400.
2. Let's calculate the combined rainfall for months which don't have both values under 200.
- June: 150 + 410 = 560 > 400. This works.
- August: 190 + 280 = 470 > 400. This works.
- October: 50 + 250 = 300 < 400. This doesn't work.
3. Our answer will be: 2.
Part 2. The greatest percentage drop in combined rainfall occurred from ___.
1. Visibly, the greatest drops occurred in June-July, August-September, and October-November.
2. Let's calculate exactly by what percent.
- June-July: 150 + 410 = 560 to 180 + 150 = 330, which is a percent drop of \(\frac{560 - 330}{330} \approx 0.697 = 69.7\%\).
- August-September: 190 + 280 = 470 to 25 + 70 = 95, which is a percent drop of \(\frac{470 - 95}{470} \approx 0.798 = 79.8\%\).
- October-November: 50 + 250 = 300 to 60 + 40 = 100, which is a percent drop of \(\frac{300 - 100}{300} \approx 0.667 = 66.7\%\).
3. The greatest percent drop is August-September.
4. Our answer will be: From August to September.
1. Months with less than 200 in both values (columns) won't work since the sum will be less than 200 + 200 = 400.
2. Let's calculate the combined rainfall for months which don't have both values under 200.
- June: 150 + 410 = 560 > 400. This works.
- August: 190 + 280 = 470 > 400. This works.
- October: 50 + 250 = 300 < 400. This doesn't work.
3. Our answer will be: 2.
Part 2. The greatest percentage drop in combined rainfall occurred from ___.
1. Visibly, the greatest drops occurred in June-July, August-September, and October-November.
2. Let's calculate exactly by what percent.
- June-July: 150 + 410 = 560 to 180 + 150 = 330, which is a percent drop of \(\frac{560 - 330}{330} \approx 0.697 = 69.7\%\).
- August-September: 190 + 280 = 470 to 25 + 70 = 95, which is a percent drop of \(\frac{470 - 95}{470} \approx 0.798 = 79.8\%\).
- October-November: 50 + 250 = 300 to 60 + 40 = 100, which is a percent drop of \(\frac{300 - 100}{300} \approx 0.667 = 66.7\%\).
3. The greatest percent drop is August-September.
4. Our answer will be: From August to September.
