Search found 12 matches
x1+x2+140+x3+x4 = 124*5 =620
consider min for x3 and x4 for x1 to be max. i.e 140
so x1+x2+ 3*140= 620 =>x1+x2 = 620-420 = 200
and x1 can be eq or less than x2 so it is max when it is eq to x2
hence 2x1 = 200 and x1 = 100.
- by srikanthb.69
Tue Jul 19, 2011 8:12 am- Forum: Data Sufficiency
- Topic: GMATPREP -DS8
- Replies: 1
- Views: 923
LCM of ab,b+1 is a*b*(b+1) and given that a & b are consecutive +ive integers. we can say that one of a,b is even. if a is even then b+1 is also even and all are consecutive numbers so for every three consecutive numbers one of the number is divisible by 3. if a is 3..then LCM is divisible by 6 ...
- by srikanthb.69
Tue Jul 19, 2011 8:03 am- Forum: Data Sufficiency
- Topic: LCM
- Replies: 5
- Views: 1574
At the beginning of last year, Tony's Auto dealership had 200 cars available for sale on the lot. The cars were acquired by Tony's at an average cost of $10,000 each. During last year, Tony's acquired an additional 50 cars. What was the total acquisition cost on the lot at Tony's at the end of the ...
- by srikanthb.69
Wed Jul 13, 2011 8:30 pm- Forum: Data Sufficiency
- Topic: Cars
- Replies: 31
- Views: 14283
If x is not equal to 0, is |x| less than 1? (1) (x/|x|) < x (2) |x| > x This is Greek to me. :( I often find that Absolute Value problems (particularly DS) can get some help through number lines. So first we want to rephrase the stem: if x/=0, then is |x|<1? Using a number line, you can visualize t...
- by srikanthb.69
Wed Jul 13, 2011 7:33 pm- Forum: Data Sufficiency
- Topic: MGMAT CAT Question - Absolute Value Inequalities
- Replies: 5
- Views: 1992
stmt 1 -> 2x-2y=1 => x-y=1/2 few values which satisfy this eq are x=1,y=1/2 x=1/2,y=0 x= -1 ,y= -3/2 o x=1/4,y= -1/4 so Not Sufficient. but From here we know that x>y stmt 2 -> x/y>1 => x>y if x>0 & y>0 or x<y if x<0 & y<0 so Not sufficient. From 1 we know that x>y and from 2 if x>y then x>0...
- by srikanthb.69
Wed Jul 13, 2011 5:12 am- Forum: Data Sufficiency
- Topic: X, Y positive??
- Replies: 4
- Views: 1186
Question - (3M +7W)*15 = W ?
1 - Given - (2M + 4W)*10 = W - So even if 1M + 3W sit idle W will be completed in 10days..so answer
is YES and it is Sufficient.
2-Given - w=2M => 3M + 7W = 17M but this dosent say anything about the work..so Not sufficient
Answer is A
- by srikanthb.69
Tue Jul 12, 2011 7:14 pm- Forum: Data Sufficiency
- Topic: work problem
- Replies: 6
- Views: 1385
what about
-4 , -3 , -1 , 4, 5 , 6 / -4, -3 , -1 ,1 , 4 , 5 --give median +ive
-4, -3 , -1 ,0 , 4 , 5 -- give median -ive so I think the answer is E.
- by srikanthb.69
Tue Jul 12, 2011 6:52 am- Forum: Data Sufficiency
- Topic: DS- Statistics - reopening topic
- Replies: 8
- Views: 1445
Any project can have 0 or more number of employees assigned per project. Statement 1 gives 25%projects have 4 or more employees assigned to them which covers numbers from 4 to any number. – Does not say anything about the remaining 75% projects which can have a significant impact on median – NOT...
- by srikanthb.69
Sat Jun 25, 2011 3:06 am- Forum: Data Sufficiency
- Topic: dobt in OG DS
- Replies: 3
- Views: 933
statement 1 -> qp2<tp2 if both are +ive numbers then q<t if both are -ve numbers then q>t and we will have 2more cases as to if qp2 is +ve and tp2 -ve and reversal. so Not sufficient Statement 2 ->qp3>tp3 above exp applies here so Not sufficient Both together The equality does not change by adding o...
- by srikanthb.69
Fri Jun 24, 2011 11:55 pm- Forum: Data Sufficiency
- Topic: manhattan cat 1 ...
- Replies: 5
- Views: 1551
- by srikanthb.69
Fri Jun 24, 2011 11:04 pm- Forum: Data Sufficiency
- Topic: DS-sequence and series
- Replies: 7
- Views: 2193
Option 1 it clearly shows the sequence
1st term - (1+1)^2
2nd term - (2+1)^2
3rd term - (3+1)^2
.....so on hence 999th term (999+1)^2 -- SUFFICIENT
Option 2: Its equation representation of the series so 999th term is (999+1)^2
---- SUFFICIENT
[spoiler]Hence : D[/spoiler]
- by srikanthb.69
Thu Jun 23, 2011 8:30 am- Forum: Data Sufficiency
- Topic: DS-sequence and series
- Replies: 7
- Views: 2193
If |a|= b-c it can either be a = b-c if a>0 or -a = b-c if a<0 or b=c if a=0 Info 1 says c+a !=b so that rules out the a>0 option then |a| = b-c => -a = b-c if only we know a<0 and a!=0 which is given in\ the second option so the answer is C. PS: If a=0 we can never say a=b-c and we will not have a ...
- by srikanthb.69
Thu Jun 23, 2011 6:34 am- Forum: Data Sufficiency
- Topic: Absolute Value
- Replies: 3
- Views: 901