Search found 90 matches
Answer should be c as we can get to a solution using both the statements; but because the answers are in decimal which cannot be, I think the question is wrong. Had 450 been 470, we would get 30 as answer.
Expert help needed.
- by Mom4MBA
Wed Sep 21, 2011 8:50 pm- Forum: Data Sufficiency
- Topic: a data from gmat forum
- Replies: 5
- Views: 1668
Hi pemdas, p/(q^2)=? st(1) p/(q^2)=c where c is a positive integer. Not Sufficient as c can be anything; st(2) q/p=b where b is a positive integer and p=bq . Not Sufficient as p/(q^2)=bq/(q^2)=b/q and b can be any value combined st(1&2): b/q=c, q=b/c --> from st(2) q=bp hence bp=b/c, p=1/c; from...
- by Mom4MBA
Tue Jul 12, 2011 9:00 pm- Forum: Data Sufficiency
- Topic: Number Prop
- Replies: 3
- Views: 1051
given w/c = 5/2
statement 1 :
c/m = 5/11
this gives the ration but not actual number
alone not sufficient
statement 2 :
w<30
alone not sufficient
taking both:
w/c = 5/2
c/m = 5/11
so
w/m = 25/22
given w<30
so w=25 hence m=22
both together sufficient
- by Mom4MBA
Mon Jul 11, 2011 9:59 pm- Forum: Data Sufficiency
- Topic: GMATprep - DS
- Replies: 3
- Views: 1161
Average of quaterly revenues for 2002
(13+15+16+16)/ 4 = 60/4 = 15
Average of quaterly revenues for 2003
(17+18+17+20)/ 4 = 72/4 = 18
percentage change from 2002 to 2003
[(18-15)/15 ] * 100 = 20 %
- by Mom4MBA
Mon Jul 11, 2011 9:39 pm- Forum: Data Sufficiency
- Topic: Mean
- Replies: 6
- Views: 5741
http://www.beatthegmat.com/average-prob ... tml#377089
Question should have been posted in PS section.
- by Mom4MBA
Mon Jul 11, 2011 9:25 pm- Forum: Data Sufficiency
- Topic: Mean - Question
- Replies: 3
- Views: 1287
In the rectangular coordinate system,are the points (r,s) and (u,v) equidistant from the origin? (1) r+s=1 (2) u=1-r;v=1-s; for equidistance √(r² + s²) = √(u² + s²) statement 1: not sufficient as nothing is known about u and v statement 2: √(r² + s²) = √(u² + s²) √(r² + s²) = âˆ...
- by Mom4MBA
Mon Jul 11, 2011 9:16 pm- Forum: Data Sufficiency
- Topic: Coordinate Geometry!
- Replies: 2
- Views: 1028
statement 1: alone is not sufficient, as nothing is known about the slopes. infinite lines with various slopes can pass through point (5,1) statement 2: alone is not sufficient. nothing can be done with intercepts alone. taking together plug (5,1) in the equation of both the lines y = mx + c 5 = m1 ...
- by Mom4MBA
Mon Jul 11, 2011 9:38 am- Forum: Data Sufficiency
- Topic: Is the slope of N less than P?
- Replies: 4
- Views: 1410
OG 12- DS128
A school administrator will assign each student in a group of n students to one of m classrooms. If 3 < m < 13 < n, is it possible to assign each of the n students to one of the m classrooms so that each classroom has the same number of students assigned to it? (1) It is possible to assign each of ...
- by Mom4MBA
Sun Jul 10, 2011 9:35 pm- Forum: Data Sufficiency
- Topic: OG 12- DS128
- Replies: 3
- Views: 1175
if the question is reworded that K and y=2x+3 are perpendicular (and hence we know from K's slope the relation m1*m2=-1). Also, which other additional/new info will make B sufficient. you are right, had it been given that the line is perpendicular to y=2x+3, then even statement 2 would have been su...
- by Mom4MBA
Thu Jul 07, 2011 1:58 am- Forum: Data Sufficiency
- Topic: OG-12.94
- Replies: 2
- Views: 1304
If v,w,x,y are non-negative integers, and a=3w2v b=5z3y2x is a/b a terminating decimal? (1) w>y (2) v>x so far, only 6 out of 85 people answered correctly people will definitely give you wrong answer if you give them wrong question. you should have mentioned the powers properly. Had you written pro...
- by Mom4MBA
Thu Jul 07, 2011 1:48 am- Forum: Data Sufficiency
- Topic: Tough Kaplan DS
- Replies: 11
- Views: 1970
Just a try.
A fraction can be terminating only if the denominator is 2 and/or 5 , else it is recurring.
so none of the statements alone or combined tell us anything about what the denominators x,y,z are hence answer should be (e) none of the statements are sufficient.
- by Mom4MBA
Wed Jul 06, 2011 9:06 pm- Forum: Data Sufficiency
- Topic: Tough Kaplan DS
- Replies: 11
- Views: 1970
Let Y take 'a' days to complete 'w' widgets then X will take 'a+2' days to complete 'w' widgets therefore the rate for Y will be w/a widgets per day and the rate for X will be w/(a+2) widgets per day together their rate of completing 'w' widgets will be w/a + w/(a+2) = (2a+2)w/(a(a+2))...........(i)...
- by Mom4MBA
Wed Jun 15, 2011 9:36 pm- Forum: Problem Solving
- Topic: Quant Rev. #173 PS
- Replies: 2
- Views: 1000
5a + 4 = x
23b + 7 = x
equate:
5a + 4 = 23b + 7
23b - 5a = -3
b can take values 0,1,2,3,4 above 4 x will be > 100, which is not allowed
for b=0, a=3/5 not possible
for b=1, a=26/5 not possible
for b=2, a=49/5 not possible
for b=3, a=72/5 not possible
for b=4, a=95/5=19
so x=99
- by Mom4MBA
Wed Jun 15, 2011 4:24 am- Forum: Problem Solving
- Topic: Remainder
- Replies: 4
- Views: 1279
For class A let 'a' be minimum height, so r=g-a ; range = max - min For class B let 'b' be minimum height, so s=h-b statement 1: r < s g-a<h-b but we do not know anything about g and h so insufficient statement 2: g > h r+a > s+b but we do not know anything about r and s so insufficient taking both ...
- by Mom4MBA
Wed Jun 15, 2011 4:08 am- Forum: Data Sufficiency
- Topic: Are x and y both positive ?
- Replies: 2
- Views: 1008
How many integers are there between c and d? (1) Neither c nor d is an integer. (2) c - d = 3 Statement 1 alone is not sufficient Statement 2: if both integers then just 2 integers will be between them if both non integers then 3 integers will be between them so statement 2 alone not sufficient hen...
- by Mom4MBA
Wed Jun 15, 2011 3:48 am- Forum: Data Sufficiency
- Topic: Little confusing!!!
- Replies: 2
- Views: 915