Search found 51 matches
- by rajeshsources
Mon May 17, 2010 11:30 pm- Forum: Problem Solving
- Topic: Ratio PS
- Replies: 4
- Views: 1343
Lets assume, total sold = 100 (because easy to calculate) Last Sunday, News Paper - A sales = x then News-paper-B sales = (100-x) they have given each price of NP-A & NP-B, then Revenue from NP-A = x (1$) = $x Revenue from NP-B = (100-x)($1.25) = $125-1.25x Total Revenue = Store's Revenue = NP-...
- by rajeshsources
Mon May 17, 2010 10:37 pm- Forum: Problem Solving
- Topic: Word problem
- Replies: 3
- Views: 1207
You could have post this in DATA Sufficiency Forum. Correct Answer is A.(Statement-1 alone is sufficient). This is a Yes/No type data-sufficiency problem. Here we have to check whether we are getting UNIQUE (either YES or NO) or not. Question: Is (s+t)=0 ? To say YES, (s + t) should be equal to 0 (z...
- by rajeshsources
Mon May 17, 2010 9:25 pm- Forum: Problem Solving
- Topic: Math-DS Problem-Number Line
- Replies: 1
- Views: 1222
ern5231 ----- Range means the difference of Maximum & Minimum. so,we can write as Range = 18 Max - Min = 18 The given condition is Distance of mean from large number is two times the distance from smallest number . We can write this as, Mean will always the number in between Largest(Maximum) nu...
- by rajeshsources
Mon May 17, 2010 8:39 pm- Forum: Problem Solving
- Topic: 113) Tough PS
- Replies: 2
- Views: 1304
angxif ----- I just wanted to show another method of solving. Lets take a table format, Boys Girls T(total) Ratios 3 4 7 Constant x x x Values 3x 4x 7x Now, the given condition is 5 girls more than Boys. We can write this as, Girls = Boys + 5 Substitute values from the above table, 4x = 3x + 5 then...
- by rajeshsources
Mon May 17, 2010 7:23 pm- Forum: Problem Solving
- Topic: Ratio PS
- Replies: 3
- Views: 1367
KFreudenberg ---- n(n+1)(n+2) 1. If n is EVEN, then n= EVEN, n+1 = EVEN+1 = ODD, n+2=EVEN+2=EVEN, then n(n+1)(n+2) = EVEN (ODD) (EVEN) = EVEN * (EVEN) = EVEN. 2. If n is ODD, then n=ODD, n+1=ODD+1=EVEN, n+2=ODD+2=ODD then, n(n+1)(n+2) = ODD (EVEN) (ODD) = EVEN * (ODD) = EVEN. From the above two we ...
- by rajeshsources
Mon May 17, 2010 6:45 pm- Forum: Problem Solving
- Topic: Number Properties
- Replies: 2
- Views: 1172
ern5231 ---- 5KM in 18 Minutes(18/60 hours= 3/10 hours) He ran 2 KM with speed of 20km/hr, then time taken for him = T = D/S = 2/20 = 1/10 hour Time remain = (3/10) - (1/10) = 2/10 hour So, the speed for remaining 3 KM = Distance(remain)/Time(remain) = 3*10/2 = 3*5 = 15 Km/hour. HTH, GOOD LUCK , Th...
- by rajeshsources
Mon May 17, 2010 2:48 am- Forum: Problem Solving
- Topic: 198) How Much Speed
- Replies: 1
- Views: 1305
I'm on B, Statement-2 is sufficient. This is a YES/NO -- DATA SUFFICIENCY Question. In this type, we could conclude statement is sufficient once we have got UNIQUE answer(either YES or NO), then only we will consider the statement is SUFFICIENT. Factors of 48 = 1,2,3,4,6,8,12,16,24,48. Statement-1: ...
- by rajeshsources
Thu May 13, 2010 4:59 am- Forum: Data Sufficiency
- Topic: 126) Is A factor?
- Replies: 1
- Views: 900
concept [Vishnu] ---
That's true, you have a fantastic score. Now, you have to get frustrate on Application. 
Could you brief us about your test preparation & Actual GMAT?
Thanks,
Rajesh,
Loves GMAT....!!!!
- by rajeshsources
Thu May 13, 2010 3:55 am- Forum: I just Beat The GMAT!
- Topic: just finished...wondering whether to retake...730(Q50, V38)
- Replies: 5
- Views: 2243
N is a positive integer. Is N even? 1) Sum of numbers from 1 to N is even. 2) Sum of numbers from 1 to 2N is even Condition: N is a +ve Integer. Statement-1: Sum of the numbers from 1 to N == (N*(N+1))/2. Condition given is sum of those numbers should be EVEN. We can re-write as, (N*(N+1)/2) = EVEN...
- by rajeshsources
Thu May 13, 2010 3:14 am- Forum: Data Sufficiency
- Topic: 103) Is n even?
- Replies: 2
- Views: 1174
ashforgmat --- Whatever given in the question just try to write into conditions, here, Conditions: 1. n is +ve integer 2. (n+1)(n-1) is divisible by 24 and the remainder is r. we can write as, (n+1)(n-1) = 24*k + r here k = quotient and r = remainder. I can also write this as, (n^2 ) - 1 = 24*k + r...
- by rajeshsources
Thu May 13, 2010 1:51 am- Forum: Data Sufficiency
- Topic: A doubt about the answer....
- Replies: 2
- Views: 2060
mj78ind --- Actually, I haven't tried to get the weight of nut A & B. And more over, we have not assumed each nut weight as 1gm. We have calculated weight of bag of nuts having mixture of A&B by taking the fraction of A nuts & fraction of B nuts in the Mixture of A&B . From the stem...
- by rajeshsources
Thu May 13, 2010 1:43 am- Forum: Problem Solving
- Topic: 77) How heavy is the bag
- Replies: 6
- Views: 1125
ern5231 ---- we can write the given statement as n * 2^-3 = (2*2*2)^-3 + (3*2*2)^-5 ==> n * 2^-3 = 2^-3 [ ((2*2)^-3) + (3^-5 * 2^-5 * 2^-2)] Cancel 2^-3 on both the sides, Then, ==> n = [ (2^-6) + (3^-5 * 2^-5 * 2^-2)] As the question asked for 32n, we will take LCM as 32(or 2^5), So, ==> n = 2^-5 ...
- by rajeshsources
Wed May 12, 2010 11:28 pm- Forum: Problem Solving
- Topic: 87) What is the value
- Replies: 2
- Views: 899
ern5231 ----- As we know, the sum of the numbers ranging from 1 to n, i.e. 1,2,3,4,......n Sum of numbers = (n*(n+1))/2 All even numbers from 1 to n, i.e., 2,4,6,8,10,......n Sum of these numbers (2,4,6,8,.....n) == 79 * 80. (Given) So, we can write as, 2(1,2,3,....n/2) == 79 * 80 2 * ((n/2(n/2+1))...
- by rajeshsources
Wed May 12, 2010 10:57 pm- Forum: Problem Solving
- Topic: 81) AP
- Replies: 3
- Views: 1168
- by rajeshsources
Wed May 12, 2010 10:28 pm- Forum: Problem Solving
- Topic: 83) Median wage
- Replies: 6
- Views: 1305