Search found 31 matches
The population of locusts in a certain swarm doubles every two hours. If 4 hours ago there were 1,000 locusts in the swarm, in approximately how many hours will the swarm population exceed 250,000 locusts? a) 6 b) 8 c) 10 d) 12 = e) 14 This is from a MGMAT test. Is there any way, other than creatin...
- by tapanmittal
Sun Sep 13, 2015 5:19 am- Forum: Problem Solving
- Topic: Locust in a swarm: any short-cuts?
- Replies: 5
- Views: 4050
Word problems,percenatge
Machine A currently takes x hours to complete a certain job. Machine B currently takes y hours to complete the same job. If x = 4y, by what percent will x have to decrease so that A and B together can complete the job in 3y/8 hours? (A) 15% (B) 25% (C) 30% (D) 62.5% (E) 85% How can we solve it by pi...
- by tapanmittal
Tue Aug 25, 2015 7:15 pm- Forum: Problem Solving
- Topic: Word problems,percenatge
- Replies: 2
- Views: 1358
Exponents
If x and y are positive integers and 5^x – 5^y = (2^(y – 1))(5^(x – 1)), what is the value of xy?
Ans-12
- by tapanmittal
Tue Aug 25, 2015 7:14 pm- Forum: Problem Solving
- Topic: Exponents
- Replies: 1
- Views: 1138
Inequality
If x^3 < 16x, which of the following includes at least some of the possible solutions for x, but no
values that are not solutions?
(A) |x| < 4
(B) x < 4
(C) x > 4
(D) x < –4
(E) x > 0
OA D
- by tapanmittal
Tue Aug 25, 2015 7:12 pm- Forum: Problem Solving
- Topic: Inequality
- Replies: 2
- Views: 1233
Mean Median
PFA the image.
I am having difficulty in understanding the problem.
The source is Manhattan Advanced GMAT Quant,Thanks.
- by tapanmittal
Mon Aug 24, 2015 6:59 pm- Forum: Problem Solving
- Topic: Mean Median
- Replies: 1
- Views: 1158
Inequality
If X/|X| < X Which of the following must be true about X ?
a) X>1
b) X>-1
c) |X| < 1
d) |X| = 1
e) |X|^2 > 1
OA after discussion
- by tapanmittal
Sun Aug 23, 2015 3:33 am- Forum: Problem Solving
- Topic: Inequality
- Replies: 3
- Views: 1425
OG!!
144. Are all of the numbers in a certain list of 15 numbers
equal?
(1) The sum of all the numbers in the list is 60.
(2) The sum of any 3 numbers in the list is 12.
OA-B
- by tapanmittal
Thu Aug 20, 2015 3:00 am- Forum: Data Sufficiency
- Topic: OG!!
- Replies: 4
- Views: 1657
OG
143. Beginning in January of last year, Carl made deposits of $120 into his account on the 15th of each month for several consecutive months and then made withdrawals of $50 from the account on the 15th of each of the remaining months of last year. There were no other transactions in the account las...
- by tapanmittal
Thu Aug 20, 2015 3:00 am- Forum: Data Sufficiency
- Topic: OG
- Replies: 2
- Views: 1546
OG 2015
134. The table above shows the results of a survey of 100 voters who each responded “Favorable� or “Unfavorable� or “Not Sure� when asked about their impressions of Candidate M and of Candidate N. What was the number of voters who responded “Favorable� for both candidates? (1) The nu...
- by tapanmittal
Thu Aug 20, 2015 2:59 am- Forum: Data Sufficiency
- Topic: OG 2015
- Replies: 1
- Views: 1253
Easier approach
127. The annual rent collected by a corporation from a
certain building was x percent more in 1998 than in
1997 and y percent less in 1999 than in 1998. Was
the annual rent collected by the corporation from the
building more in 1999 than in 1997 ?
(1)x>y
(2)(xy/100) < x-y
OA-B
- by tapanmittal
Mon Aug 17, 2015 10:26 am- Forum: Data Sufficiency
- Topic: Easier approach
- Replies: 4
- Views: 4157
OG 2015
114. A department manager distributed a number of pens, pencils, and pads among the staff in the department, with each staff member receiving x pens, y pencils, and z pads. How many staff members were in the department? (1) The numbers of pens, pencils, and pads that each staff member received were ...
- by tapanmittal
Mon Aug 17, 2015 10:25 am- Forum: Data Sufficiency
- Topic: OG 2015
- Replies: 3
- Views: 1482
OG 2016
Q116.The average hourly wage of television assemblers in Vernland has long been significantly lower than that in neighboring Borodia. Since Borodia dropped all tariffs on Vernlandian televisions three years ago, the number of televisions sold annually in Borodia has not changed. However, recent stat...
- by tapanmittal
Mon Aug 17, 2015 10:24 am- Forum: Critical Reasoning
- Topic: OG 2016
- Replies: 3
- Views: 2106
Pls help!!
Exposure to certain chemicals commonly used in elementary schools as cleaners or pesticides causes allergic reactions in some children. Elementary school nurses in Renston report that the proportion of schoolchildren sent to them for treatment of allergic reactions to those chemicals has increased s...
- by tapanmittal
Mon Aug 17, 2015 10:21 am- Forum: Critical Reasoning
- Topic: Pls help!!
- Replies: 1
- Views: 1533
Distance,Rate
Bob and Wendy left home to walk together to a restaurant for dinner. They started out walking at a constant pace of 3 mph. At precisely the halfway point, Bob realized he had forgotten to lock the front door of their home. Wendy continued on to the restaurant at the same constant pace. Meanwhile, Bo...
- by tapanmittal
Mon Aug 10, 2015 11:07 pm- Forum: Data Sufficiency
- Topic: Distance,Rate
- Replies: 4
- Views: 1898
OG#93
Is the number of members of Club X > the number of members of club Y?
1)Of the members of Club X,20% are also members of club Y
2) Of the members of Club Y,30% are also members of club X
OA-C
- by tapanmittal
Sun Jul 19, 2015 8:43 am- Forum: Data Sufficiency
- Topic: OG#93
- Replies: 10
- Views: 2995