Search found 68 matches
IMO E consider the following CP x x SP 44 46 profit 44-x 46-x according to the question stem, 44-x = 10% of x which implies x =40 we need to find out gross profit after price increase was what % of CP i.e (46-x) = k% of x putting x = 40 we get k =15% (option E) what is the OA?
- by just_do_it
Mon Sep 08, 2008 5:57 pm- Forum: Problem Solving
- Topic: gross profit on a computer game
- Replies: 6
- Views: 4571
(9^7 -1) is closest to 9^7
therefore expression in paranthesis ~ 9^7
9^7 * 9^2 = 9^9
hope this helps.
- by just_do_it
Mon Sep 08, 2008 5:50 pm- Forum: Problem Solving
- Topic: 9^9-9^2
- Replies: 5
- Views: 2133
since the square root of a negative number is impossible on the GMAT, the expression under square root sign has to be positive -x|x| will be positive only if x is negative. because negative x will take care of the minus sign under square roots. let x=-2 -(-2)|-2| = 2*2 = 4 and squre root of 4 = 2 = ...
- by just_do_it
Mon Sep 08, 2008 5:43 pm- Forum: Problem Solving
- Topic: GMAT Prep - Square root of x
- Replies: 7
- Views: 5747
IMO E,
each of the 3 sandwiches is divided among m students. Each one gets 1/m
the 4th sandwich is divided among (m-4) studetns . each one gets 1/(m-4)
since carol ate parts of each of the 4 sandwiches, she would have eaten
1/m + 1/m + 1/m +1(m-4) = 3/m + 1/(m-4) = (4m-12)/m(m-4)
hope this helps.
- by just_do_it
Mon Sep 08, 2008 5:35 pm- Forum: Problem Solving
- Topic: Four extra-large sandwiches
- Replies: 6
- Views: 10851
1 possible approach could be using hybrid technique of plugging in and picking numbers in the same question. i.e plugging in the options for k and picking a value for x for eg. let x=5 plugging values of K , you'll notice that only when K=-2 the fraction is not divisible by 3. hence option B is corr...
- by just_do_it
Mon Sep 08, 2008 5:24 pm- Forum: Problem Solving
- Topic: Reject a Value For K
- Replies: 1
- Views: 1209
one algebric method i can think of is as follows
sqrt(x) = +x or -x
which can be represented in absolute terms as |x|
hence sqrt(x)/x= |x|/x
hope this helps.
- by just_do_it
Mon Sep 08, 2008 5:12 pm- Forum: Problem Solving
- Topic: GMAT Prep - Num props
- Replies: 3
- Views: 1420
Assume the following, intensity at reading n = x therefore intensity at reading (n+1)=10x n intensity 3 x 4 10x 5 100x, which is 10 times the intensity at n=4 6 1000x , which is 10 times the intensity at n=5 7 10000x , which is 10 times the intensity at n=6 8 100000x , which is 10 times the intensit...
- by just_do_it
Sat Sep 06, 2008 5:42 am- Forum: Problem Solving
- Topic: OG11 #99- Red Herring?
- Replies: 7
- Views: 1777
- by just_do_it
Wed Aug 27, 2008 12:57 pm- Forum: Sentence Correction
- Topic: sufficient-sufficiently amount-amounts
- Replies: 5
- Views: 2232
imo: D
correct comparison is done between the number of nerve cells "in" mammals and "in" newts
what is the OA ?
- by just_do_it
Wed Aug 27, 2008 12:54 pm- Forum: Sentence Correction
- Topic: comparison question
- Replies: 5
- Views: 1547
- by just_do_it
Wed Aug 27, 2008 12:51 pm- Forum: Sentence Correction
- Topic: Please help-between 2 options!
- Replies: 6
- Views: 1754
cleveland is singular so we need IS instead of ARE. options C, D and E are out. option C uses THEIR which i think is incorrect to use to refer to cleveland which is singular. Cleveland is one of a large number of communities that IS at ITS waterfront to improve... In option A, gives an impression th...
- by just_do_it
Tue Aug 26, 2008 8:32 pm- Forum: Sentence Correction
- Topic: 940
- Replies: 9
- Views: 3888
Option A does not use the correct idiom " Just as X, So Y". It think option A is incorrect. The beginning of the sentence states that Dr. Hegstead argues .... that means that we should see a contrast in the second part of the sentence. And only option D uses the contrasting word "whil...
- by just_do_it
Tue Aug 26, 2008 8:20 pm- Forum: Sentence Correction
- Topic: mini test sc 3
- Replies: 5
- Views: 1755
what is the 'subject' of this sentence ? isn't it Six teenagers ? If that is the case then "who" after virgin mary should be an object pronoun - whom in which case, in my opinion, option B should be correct. the use of "had" is unnecessary - options A, C and E are out. Option D u...
- by just_do_it
Tue Aug 26, 2008 8:07 pm- Forum: Sentence Correction
- Topic: 1000 sc Q 390 who/whom
- Replies: 15
- Views: 5199
"protecting" creates a modifying phrase that explains the purpose of "equipment". The infinitive 'to protect' is an adjective modifying "items" instead of "equipment".
hence the -ing form of the verb is needed.
Hope that helps.
- by just_do_it
Mon Aug 25, 2008 7:42 pm- Forum: Sentence Correction
- Topic: 1000SC 307
- Replies: 3
- Views: 1743
- by just_do_it
Mon Aug 25, 2008 4:15 pm- Forum: Problem Solving
- Topic: help
- Replies: 4
- Views: 1784