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x: 215
y: 75
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
86% (02:35) correct
14%
(02:52)
wrong
based on 862
sessions
History
Date
Time
Result
Not Attempted Yet
Each of 1,455 runners registered to run in an upcoming marathon answered "Yes" or "No" to two questions on the registration form: (1) Do you run at least 25 miles per week? and (2) Do you experience joint pain? Of those who answered "Yes" to the first question, 785 answered "Yes" to the second question, and 380 answered "No" to the second question. Of those who answered "No" to the first question, x runners answered "Yes" to the second question, and y runners answered "No" to the second question, where x > y.
Select for x and for y values that are jointly consistent with the given information. Make only two selections, one in each column.
GMAT-Club-Forum-18lf6iy1.png [ 201.62 KiB | Viewed 3586 times ]
Select for x and for y values that are jointly consistent with the given information. Make only two selections, one in each column.
Attachment:
GMAT-Club-Forum-18lf6iy1.png [ 201.62 KiB | Viewed 3586 times ]
| x | y | |
| 75 | ||
| 145 | ||
| 215 | ||
| 290 | ||
| 455 |
ShowHide Answer
Official Answer
x: 215
y: 75
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17 Oct 2019, 17:51
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I got stuck on this one too so I'll reply:
The key thing is here to read carefully: Of those who answered "Yes" to the first question, 785 answered "Yes" to the second question, and 380 answered "No" to the second question.
Basically this is saying 785 + 380 = 1170 is what people said "Yes" to the first question. Given we know the "Yes" now and 1,455 of total participants, we can figure out the number of "No" for the 1st question which is 290.
Now it's asking us what happened to the 290 so we know that x + y must equals 290 and x>y so we are just looking for two values that add up to 290. Hope that helps
The key thing is here to read carefully: Of those who answered "Yes" to the first question, 785 answered "Yes" to the second question, and 380 answered "No" to the second question.
Basically this is saying 785 + 380 = 1170 is what people said "Yes" to the first question. Given we know the "Yes" now and 1,455 of total participants, we can figure out the number of "No" for the 1st question which is 290.
Now it's asking us what happened to the 290 so we know that x + y must equals 290 and x>y so we are just looking for two values that add up to 290. Hope that helps
17 Oct 2019, 21:27
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785 - Yes to first question, Yes to second question
380- Yes to first question, No to second question
Total yes to first question = 785+380= 1165
1455-1165 = 290
290 = x(No to first, yes to second)+y(No to first, no to second)
x>y so x = 215,y= 75
Posted from my mobile device
380- Yes to first question, No to second question
Total yes to first question = 785+380= 1165
1455-1165 = 290
290 = x(No to first, yes to second)+y(No to first, no to second)
x>y so x = 215,y= 75
Posted from my mobile device
