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12 Nov 2014, 05:41
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B
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:
79% (01:33) correct
21%
(01:43)
wrong
based on 105
sessions
History
Date
Time
Result
Not Attempted Yet
If 85 percent of the test takers taking an old paper and pencil GMAT exam answered the first question on a given math section correctly, and 75 percent of the test takers answered the second question correctly, and 5 percent of the test takers answered neither question correctly, what percent answered both correctly?
A. 60 %
B. 65 %
C. 70%
D. 75%
E. 80%
PS could someone please explain this because the answer in the book was unclear for me.
A. 60 %
B. 65 %
C. 70%
D. 75%
E. 80%
PS could someone please explain this because the answer in the book was unclear for me.
12 Nov 2014, 06:34
Kudos
Bookmarks
JoostGrijsen
If 85 percent of the test takers taking an old paper and pencil GMAT exam answered the first question on a given math section correctly, and 75 percent of the test takers answered the second question correctly, and 5 percent of the test takers answered neither question correctly, what percent answered both correctly?
A. 60 %
B. 65 %
C. 70%
D. 75%
E. 80%
PS could someone please explain this because the answer in the book was unclear for me.
A. 60 %
B. 65 %
C. 70%
D. 75%
E. 80%
PS could someone please explain this because the answer in the book was unclear for me.
{Total} = {First correctly} + {Second correctly} - {Both correctly} + {Neither correctly}
100 = 85 + 75 - {Both correctly} + 5
{Both correctly} = 65.
Answer: B.
Theory on Overlapping Sets:
how-to-draw-a-venn-diagram-for-problems-98036.html
advanced-overlapping-sets-problems-144260.html
All DS Overlapping Sets Problems to practice: search.php?search_id=tag&tag_id=45
All PS Overlapping Sets Problems to practice: search.php?search_id=tag&tag_id=65
how-to-draw-a-venn-diagram-for-problems-98036.html
advanced-overlapping-sets-problems-144260.html
All DS Overlapping Sets Problems to practice: search.php?search_id=tag&tag_id=45
All PS Overlapping Sets Problems to practice: search.php?search_id=tag&tag_id=65
Hope it helps.
13 Nov 2014, 01:57
Kudos
Bookmarks
Answer = B = 65%
Refer diagram below:
over.png [ 4.86 KiB | Viewed 6047 times ]
Setting up the equation
85 + 75 - x + 5 = 100
x = 165 - 100 = 65%
Answer = B
Refer diagram below:
Attachment:
over.png [ 4.86 KiB | Viewed 6047 times ]
85 + 75 - x + 5 = 100
x = 165 - 100 = 65%
Answer = B
