GMAT Data Sufficiency (DS) | Re: Is line y = kx + b tangent to circle x^2 +...
Is line y=kx+b tangent to circle x^2+y^2=1? Notice that a circle represented by the equationx^2+y^2=1 is centered at the origin and has the radius ofr=\sqrt{1}=1 .(1)k+b=1 --> ifk=0 andb=1 then the...
View ArticleIntegrated Reasoning (IR) | Re: GMATPrep IR: Flowchart representing...
mattce wrote:KapTeacherEli wrote:Injuin wrote:I got this question correct by simply putting in the values and following the schematic. Was there supposed to be any cool way of figuring out without...
View ArticleIntegrated Reasoning (IR) | Re: Multi-Source Reasoning GMATPrep
Capricorn369 wrote:ahmed2502 wrote:Can someone help with the below question in the red box ?I could not understand the question itself . Please find my understanding on the IR. Questions/Statements in...
View ArticleGMAT Problem Solving (PS) | Re: All points (x,y) that lie below the line l,...
study wrote:All points (x,y) that lie below the line l, shown above, satisfy which of the following inequalities? A. y < 2x + 3B. y < -2x + 3C. y < -x + 3D. y < 1/2*x + 3E. y < -1/2*x +...
View ArticleGMAT Problem Solving (PS) | Re: If Bill can buy 3 pairs of jeans and 2 shirts...
3J + 2S = 692J + 3S = 66----------------5J + 5S = 135 ----(divide by 5)---> J + S = 273J + 2S = J + 2(J + S) = J + 54 = 69 ---> J = 153*15 + 2S = 6945 + 2S = 692S = 24S = 12Answer: B
View ArticleGMAT Problem Solving (PS) | Re: Points A, B, and C lie, in that order, on a...
A to B = 200 miles(plugged in number) B to C = 100 miles(plugged in number) Since A to B speed is 100 mph, then the ride took 2 hours. Since B to C speed is 75 mph, the ride took 1+1\3 hours which is...
View ArticleGMAT Problem Solving (PS) | Re: Five kilograms of oranges contained 98% of...
98% water =4.9 Kg2% Non Water = .1kg (I)After evaporation, let new weight of oranges be X kgs.Water is 2 % less. 96 % of X. Therefore, non water is 4% of X. (II)Weight of Non water is same, before and...
View ArticleGMAT Problem Solving (PS) | Re: Miguel is mixing up a salad dressing....
Olive Oil=5/8Vinger=1/4Salt , Pepper , sugar together = 1- (5/8+1/4)=1/8Salt, pepper, sugar each (evenly) =1/8 divided by 3=1/24 each.Let total solution be 120. ( take a smart number, multiple of...
View ArticleGMAT Data Sufficiency (DS) | Re: If ax + b = 0, is x > 0 (1) a + b > 0 (2) a...
givenax=- b then x =\frac{-b}{a} question becomes is\frac{-b}{a}>0 From statement1a+b > 0 so the values for(a,b)>> (+,+) , (-,+), (+,-)a-b>0 so the values for(a,b) >> (+,+), (+,-)...
View ArticleGMAT Data Sufficiency (DS) | Re: If a > 0, b > 0 and c > 0, is a(b - c) = 0?
If a > 0, b > 0 and c > 0, is a(b - c) = 0? Isa(b - c) = 0 ? --> isa=0 orb-c=0 ? Since given thata > 0 , then the questions basically asks whetherb-c=0 .(1) b - c = c - b -->2b-2c=0...
View ArticleGMAT Data Sufficiency (DS) | Re: If c and d are integers, is c even?
If C and D are integers, is C even? (1) C*(D+1) is even. In order the product to be even C must be even or D+1 must be even, or both. Hence it's not necessary C to be even. Not sufficient. (2)...
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GMAT Problem Solving (PS) | Re: Area of shaded region
Genfi wrote:Hi Bunel,I didn't understand the below mentioned part. I did refer to the link provided by you. Can you please can explain this central angle theorem."According to the central angle...
View ArticleGMAT Data Sufficiency (DS) | Re: Is xy+xy
Kris01 wrote:Hello Mun23,Let me try answering this question for you. This question asks us whether 2xy<xy. Now the question we need to ask ourselves is when would this turn out to be true? If x and...
View ArticleGMAT Problem Solving (PS) | Re: A certain shade of gray paint is obtained by...
Let one gallon be 80 liters. ( Assume smartly)30 White +50 black = 80litersAccording 2 question, we need 2 gallons i.e- 160 liters. ( multiply above equation with 2)60W+100B=160 ltrsMinimum gallons for...
View ArticleGMAT Problem Solving (PS) | Re: If the sum of the consecutive integers from...
As explained above n must be larger than 42 to compensate for the negative numbers in the set.That means that 372 is the sum of x number of consecutive integers >43 (i.e. 43 + 44 + ... + (43+x)),...
View ArticleGMAT Quantitative Section | Re: Standard Deviation List question
mokura wrote:Hi,Can you tell me how I would solve a question similar to the following?Let's say I have the following list representing scores on an exam for 3 studentsstudent: a b ctest 1: 4 5 6test...
View ArticleGMAT Data Sufficiency (DS) | Re: Is |x^2 + y^2| > |x^2 - y^2|?
Is |x^2 + y^2| > |x^2 - y^2|?is x^2 + y^2 > x^2 -y^2 is2y^2>0is y > 0 ORis x^2 + y^2 > y^2-x^2is 2x^2 >0is x > 0(1) x > y The question asks if y>0 or is x>0. #1 tells us...
View ArticleGMAT Quantitative Section | Re: Could anyone please share those Sandeep...
can the document be shared with me as well???
View ArticleGMAT Data Sufficiency (DS) | Re: Is |x| > |y|?
Is |x| > |y|?Is x>y?ORIs x>-y?We can also square both sides as we know that x, y are >=0|x| > |y|is |x|^2 > |y|^2?Is x^2 > y^2?(1) x^2 > y^2This tells us directly that x^2 is...
View ArticleGMAT Data Sufficiency (DS) | Re: Is |x-y|=||x|-|y||? (1) x>y (2) x
Is |x-y|=||x|-|y||?is x-y = |y|-|x|OR is x-y = |x|-|y| (x-y)^2 = (|x|-|y|)^2?(x-y)*(x-y) = (|x|-|y|)*(|x|-|y|)x^2-2xy+y^2 = |x|^2 - 2|x|*|y| + |y|^2-2xy = -2|xy|xy = |xy|That is only possible when xy...
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