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 Your Progress
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
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:
We know Strengthen and Weaken questions account for more than 50% of the CR questions on the GMAT. With CR becoming even more important on GMAT Focus, it's time you strengthen your weaknesses with an approach that improves your solving time and accuracy!
Register for the GMAT Club Virtual MBA Spotlight fair, the biggest MBA fair of the year. You will have a chance to hear Admissions directors from almost every Top 20 program speak, network with peers, and conveniently attend morning or afternoon sessions.
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Select the dropdowns below and click "Submit" to add this question to your Error log.
Difficulty:
35%
(medium)
Question Stats:
78%
(02:40)
correct 22%
(03:06)
wrong
based on 976
sessions
History
Date
Time
Result
Not Attempted Yet
An international health organization collected global data regarding a certain disease for each of 14 consecutive years (Y1 – Y14). The graph shows the annual numbers of cases, countries, countries with local cases (i.e., cases for which the infection was contracted within the country), and countries with non-local cases (i.e., cases for which the infection was contracted outside of the country).
From each drop-down menu, select the option that creates the most accurate statement according to the information provided.
The percent increase in the number of cases of the disease from Y9 to Y12 was, to the nearest 10%, .
The average (arithmetic mean) of the numbers of countries with local cases from Y1 to Y5 was, to the nearest 5 countries, .
Submit Answer
Start the Timer above, select the dropdowns, and click "Submit" to add this question to your Error log.
Select the dropdowns, and click "Submit" to add this question to your Error log.
The percent increase in the number of cases of the disease from Y9 to Y12 was, to the nearest 10%, _________.
Solution: For Y9, the number of cases if 200,000 and for Y12 the number of cases is 600,000. To calculate the percent increase in the number of cases: Increase = 600,000 - 200,000 = 400,000. % Increase = ( 400,000 / 200,000 ) * 100 = ( 4 / 2 ) * 100 = 200 %
Part 2:
The average (arithmetic mean) of the numbers of countries with local cases from Y1 to Y5 was, to the nearest 5 countries, _________.
Solution: Y1 - 51 countries Y2 - 50 countries Y3 - 39 countries Y4 - 40 countries Y5 - 55 countries Mean = ( 51 + 50 + 39 + 40 + 55 ) / 5 = 235 / 5 = 47. Closest option choice nearest to 5 is 45.
Lets say the answer is 58%,the nearest ten percent would be 60% i.e round up and if the answer lets say is 51-55 %,round down to 50%,basically it depends on the units digits of the number. 5 or less, round down,6 to 9 round up. Hope this clarifies
The percent increase in the number of cases of the disease from Y9 to Y12 was, to the nearest 10%, _________.
Solution: For Y9, the number of cases if 200,000 and for Y12 the number of cases is 600,000. To calculate the percent increase in the number of cases: Increase = 600,000 - 200,000 = 400,000. % Increase = ( 400,000 / 200,000 ) * 100 = ( 4 / 2 ) * 100 = 200 %
Part 2:
The average (arithmetic mean) of the numbers of countries with local cases from Y1 to Y5 was, to the nearest 5 countries, _________.
Solution: Y1 - 51 countries Y2 - 50 countries Y3 - 40 countries Y4 - 40 countries Y5 - 45 countries Mean = ( 51 + 50 + 40 + 40 + 45 ) / 5 = 226 / 5 ~ 45.2 Closest option choice nearest to 5 is 45.
Question 1 is straight forward, number of cases of the disease from Y9 (200) to Y12(600) was, so {(600-200)/200} *100= 200% In Question 2, data moves between 50 and 40 so average should be in between, there is one value in the given answer choice; 45 and it is our answer