Search found 65 matches
Lost again
Hey guys, for this one I'm also very lost indeed. Stores X,Y and Z each sell a certain item that has a given list price. Stores X and Y are located in a state with a 5% percent sales tax, and both sell the item at a 5% discount off list price, while store Z is located in a state with no sales tax an...
- by lukaswelker
Thu Apr 17, 2014 8:56 am- Forum: Problem Solving
- Topic: Lost again
- Replies: 1
- Views: 1412
totaly lost
Hey Guys
For this one I don't even know where to start.
An integer N between 1 and 99, inclusive, is to be chosen at random. What is the probability that N(N+1) will be divisible by 3?
1/9 : 1/3 : 1/2 : 2/3 : 5/6
Any help will be more then welcome
Cheers
Lukas
- by lukaswelker
Thu Apr 17, 2014 8:47 am- Forum: Problem Solving
- Topic: totaly lost
- Replies: 3
- Views: 2087
area
Hello guys I'm going to far in calculations and I get it wrong. There must be an easier way. Here goes the question, A small, rectangular park has a perimeter of 560 feet and a diagonal measurement of 200 feet. What is its area, in square feet? 19200 : 19600 : 20000 : 20400 : 20800. Please let me kn...
- by lukaswelker
Thu Apr 17, 2014 8:42 am- Forum: Problem Solving
- Topic: area
- Replies: 11
- Views: 5131
Rubella
Hey Guys I'm lacking the obvious math equation here, In a certain region, the number of children who have been vaccinated against rubella is twice the number who have been vaccinated against mumps. The number who have been vaccinated against both is twice the number who have been vaccinated only aga...
- by lukaswelker
Thu Apr 17, 2014 8:31 am- Forum: Problem Solving
- Topic: Rubella
- Replies: 2
- Views: 1826
Standard Deviation
hey guys I just have a doubt regarding the sufficiency of the first. Here goes the question, Web site W receives orders for its products every day. What is the standard deviation of the numbers of orders that Web site W received for the past 5 days? (1) the average (arithmetic mean) number of orders...
- by lukaswelker
Thu Apr 17, 2014 8:24 am- Forum: Data Sufficiency
- Topic: Standard Deviation
- Replies: 1
- Views: 3399
x-axis intersection
Hey Guys
I have a small doubt with the following,
In an (x;y) plane, if y=(x+1)(x-1)2(exponent)+2. At now many point does this line intercept the x-axis?
None : One : Two : Three : Four
Is this a simple as plugging x=0? Sometimes I can't trust easy answers 
Let me know
Many thanks
Lukas
- by lukaswelker
Thu Apr 17, 2014 8:18 am- Forum: Problem Solving
- Topic: x-axis intersection
- Replies: 1
- Views: 1218
percentage calculation
Dear, I'm almost able to resolve this one but I have a doubt with the result. Here come the question, At a certain factory, 10 percent of the staplers produced on Monday were defective and 2 percent of the non defective staplers were rejected by mistake. If 90 of the non defective staplers were reje...
- by lukaswelker
Thu Apr 17, 2014 8:12 am- Forum: Problem Solving
- Topic: percentage calculation
- Replies: 4
- Views: 3484
mean
Hey Guys I can't seem to find a way to solve this problem. Here's the question, A certain list consists of 21 different numbers. If N is in the list and N is 4 times the average (arithmetic mean) of the other 20 numbers in the list, then N is what fraction of the sum of the 21 numbers in the list? 1...
- by lukaswelker
Thu Apr 17, 2014 5:09 am- Forum: Problem Solving
- Topic: mean
- Replies: 4
- Views: 1841
archaelogist
Hey Guys Here is the question, Just like the background in art history needed by an archaeologist in order to evaluate finds of ancient art, the nautical archaeologist needs specialized knowledge of the history and theory of ship design in order to understand shipwrecks. •Just like the background ...
- by lukaswelker
Wed Apr 09, 2014 6:24 am- Forum: Sentence Correction
- Topic: archaelogist
- Replies: 2
- Views: 1425
Hungarian working women
Hey Guys, for this one I'm completely lost. In Hungary, as in much of Easter Europe, an overwhelming proportion of women work, many of which are in middle management and light industry. •as in much of Easter Europe, an overwhelming proportion of women work, many of which are in, •as with much of...
- by lukaswelker
Wed Apr 09, 2014 6:21 am- Forum: Sentence Correction
- Topic: Hungarian working women
- Replies: 1
- Views: 1073
New York city bike
Hey Guys I can't understand why one can use , regulating as the first verb Here is the question A new York City ordinance of 1897 regulated the use of bicycles, mandated a maximum speed of eight miles an hour, required of cyclist to keep feet on pedals and hands on handlebars at all times, and it gr...
- by lukaswelker
Wed Apr 09, 2014 6:18 am- Forum: Sentence Correction
- Topic: New York city bike
- Replies: 2
- Views: 1448
scientist ability
Hey Guys I can't see the reasoning behind the correct answer. Here goes the question The ability of scientist to provide models of the atmosphere’s complex responses to changing conditions, like seasonal and daily cycles or different planetary conjunctions, have become ever more accurate. •The a...
- by lukaswelker
Wed Apr 09, 2014 6:14 am- Forum: Sentence Correction
- Topic: scientist ability
- Replies: 1
- Views: 1149
Fire Ant
Hey Guy, I have some trouble seeing why I can't use which in the answer for this question. Many entomologists say that campaigns to eradicate the fire ant in the United States have failed because the chemicals that were used were effective only in wiping out the ant’s natural enemies, which made i...
- by lukaswelker
Wed Apr 09, 2014 6:11 am- Forum: Sentence Correction
- Topic: Fire Ant
- Replies: 1
- Views: 1272
whiplash
Hey Guys, here goes the question. In countries where automobile insurances includes compensation for whiplash injuries sustained in automobile accidents, reports of having suffered such injuries are twice as frequent as they are in countries where whiplash is not covered. Some commentators have argu...
- by lukaswelker
Wed Apr 09, 2014 6:09 am- Forum: Critical Reasoning
- Topic: whiplash
- Replies: 2
- Views: 1897
- by lukaswelker
Wed Apr 09, 2014 5:15 am- Forum: Problem Solving
- Topic: hypotenus of an isoceles right triangle
- Replies: 8
- Views: 2279