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case study on two friends
A case study on two friends Sarah and Christie revealed that c years ago Sarah was half as old as what Christie will be in s years from now. The study also revealed that s years ago Sarah was 2 fewer than half as old as what Christie will be in c years from now. If Christie’s present age is 36, wh...
- by sanju09
Thu Oct 08, 2015 2:44 am- Forum: Problem Solving
- Topic: case study on two friends
- Replies: 1
- Views: 858
Does Country X have more citizens than Country Y? (1) 60% of Country X's citizens are also citizens of Country Y. (2) 30% of Country Y's citizens are not citizens of Country X. (1) This means that number of citizens who belong to both countries represent 60 percent of the population of Country X. B...
- by sanju09
Wed Sep 23, 2015 4:46 am- Forum: Data Sufficiency
- Topic: Statistics
- Replies: 4
- Views: 1553
Container A and Container B are initially full of water and the volumes of Container A and Container B are in the ratio 2 to 3 respectively. A third container, Container C, which is in volume the largest among the three containers, is initially 20 percent full of water. When one-half of Container A...
- by sanju09
Fri Sep 18, 2015 2:26 am- Forum: Problem Solving
- Topic: the three containers
- Replies: 3
- Views: 1437
the three containers
Container A and Container B are initially full of water and the volumes of Container A and Container B are in the ratio 2 to 3 respectively. A third container, Container C, which is in volume the largest among the three containers, is initially 20 percent full of water. When one-half of Container Aâ...
- by sanju09
Wed Sep 16, 2015 11:09 pm- Forum: Problem Solving
- Topic: the three containers
- Replies: 3
- Views: 1437
it's typo only
Hi All,
GMAT OG 2016, page 278 Qn. 20: Statement 2 either contradicts statement 1 or it's typo. Though the explanation confirms that it's typo only.
Regards
- by sanju09
Fri Aug 28, 2015 10:05 pm- Forum: Data Sufficiency
- Topic: it's typo only
- Replies: 0
- Views: 1112
- by sanju09
Fri Jul 24, 2015 1:59 am- Forum: Problem Solving
- Topic: greater than 4?
- Replies: 12
- Views: 2813
A certain football team played x games last season, of which the team won exactly y games. If tied games were not possible, how many games did the team win last season? (1) If the team had lost two more of its games last season, it would have won 20 percent of its games for the season. (2) If the t...
- by sanju09
Thu Jul 02, 2015 4:27 am- Forum: Data Sufficiency
- Topic: Football
- Replies: 5
- Views: 3091
- by sanju09
Thu Jul 02, 2015 4:27 am- Forum: Data Sufficiency
- Topic: Football
- Replies: 5
- Views: 3091
A certain panel is to be composed of exactly three women and exactly two men, chosen from x women and y men. How many different panels can be formed with these constraints? (1) If two more women were available for selection, exactly 56 different groups of three women could be selected. (2) x = y + ...
- by sanju09
Thu Jul 02, 2015 3:54 am- Forum: Data Sufficiency
- Topic: x women and y men
- Replies: 3
- Views: 1647
constantly online
During 11 AM to 3 PM on the last Monday, four friends Karl, Lucy, Medic, and Nelson remained constantly online over distinct periods of time (in hours) within the given duration. If Medic remained online throughout the duration and Nelson remained online for more number of hours than Lucy did, which...
- by sanju09
Thu Jul 02, 2015 12:51 am- Forum: Data Sufficiency
- Topic: constantly online
- Replies: 2
- Views: 1270
true for integers?
Which of the following is true for integers? A. No two perfect squares add to a perfect cube B. No two perfect squares add to a perfect square C. No two perfect cubes add to a perfect square D. There is no smallest perfect cube E. The difference of two perfect squares is never a perfect square Made ...
- by sanju09
Wed Apr 08, 2015 11:48 pm- Forum: Problem Solving
- Topic: true for integers?
- Replies: 0
- Views: 867
p, q, and r are positive integers. If p, q, and r are assembled into the six-digit number pqrpqr, which one of the following must be a factor of pqrpqr? (A) 23 (B) 19 (C) 17 (D) 7 (E) none of the above [spoiler]D[spoiler][/spoiler] It implies that p, q, r are digits only, say 2, 3, and 4; and then ...
- by sanju09
Wed Apr 08, 2015 1:37 am- Forum: Problem Solving
- Topic: p, q, and r are positive
- Replies: 2
- Views: 1254
http://s17.postimg.org/ntlpsa87f/sequence_sum.jpg Hi All, Could anyone please suggest how to do this in under 2 minutes.? Thanks, Mallika [spoiler] NB: Posting the screenshot from the source without consent may put one in legal trouble* [/spoiler] The expression (-1)^(k + 1) (1/2^k) for integer k, ...
- by sanju09
Wed Apr 08, 2015 12:59 am- Forum: Problem Solving
- Topic: Sequence sum
- Replies: 3
- Views: 1762
A flower garden is designed by a systematic composition of plants, herbs, and shrubs only. If 40 percent of the herbs’ percent in the composition is the percent of plants in the composition, and 16 percent of the composition is shrubs, what is the percent of herbs in the composition? A. 40% B. 45...
- by sanju09
Tue Apr 07, 2015 12:23 am- Forum: Problem Solving
- Topic: plants, herbs, and shrubs only
- Replies: 5
- Views: 2047
I ran into this on the gmatpill prep test "There are 1,200 golf balls in a golf ball dispensing machine. The probability that the ball has a red stripe is 1/9th the probability that the golf ball has no stripe. How many of the golf balls in the dispensing machine have a red stripe? a)108 b)120...
- by sanju09
Tue Apr 07, 2015 12:17 am- Forum: Problem Solving
- Topic: red stripe golf ball
- Replies: 3
- Views: 1846