Search found 13 matches
OG 144 2016
In the xy- plane, region R consists of all the points (x,y) such that 2x+3y<=6. Is the point (r, s) in the region R?
1) 3r+2s=6
2) r <=3 and s <= 2.
- by sushantsahaji
Thu May 05, 2016 11:38 pm- Forum: Data Sufficiency
- Topic: OG 144 2016
- Replies: 2
- Views: 1235
OG 142
The annual rent collected by a corporation from a certain building was x % more in 1998 than in 1997and y% less in 1999 than in 1998. Was the annual rent collected by the corporation from the building more in 1999 than in 1997? 1) x> y 2) xy/100 < x-y It is easy to eliminate option 1, pls suggest ho...
- by sushantsahaji
Thu May 05, 2016 9:28 pm- Forum: Data Sufficiency
- Topic: OG 142
- Replies: 2
- Views: 1153
In a circular track of 100 meters A with the speed of 2m/s starts after 10 seconds of start of B with the speed of 4m/s. After how many seconds will they meet first time after the start of B ? A) 10 B) 20 C) 30 D) 40 E) 50 RUNNING IN THE SAME DIRECTION If the two runners are going in the same direc...
- by sushantsahaji
Wed May 04, 2016 2:26 am- Forum: Problem Solving
- Topic: Relative speed on circular path
- Replies: 4
- Views: 7224
Thank you Mitch. Source of the problem: http://www.regentsprep.org/regents/math/algtrig/ate2/abspractice.htm Practice website suggested on Gmatprepnow. Hi, Solve |2x+5|+4≥1 is the original question. Strange problem. Since an absolute value cannot be negative, |2x+5| ≥ 0. Thus, the least possible...
- by sushantsahaji
Wed Apr 27, 2016 3:23 am- Forum: Problem Solving
- Topic: Not a question but an intermediary step
- Replies: 4
- Views: 1515
Hi,
Solve |2x+5|+4>=1 is the original question. Question is not tough to solve. But I have a doubt in second step,
|2x+5|>=-3. (|2x+5|can never be equal to -3.)
So, is the above statement valid?
- by sushantsahaji
Tue Apr 26, 2016 2:34 am- Forum: Problem Solving
- Topic: Not a question but an intermediary step
- Replies: 4
- Views: 1515
Not a question but an intermediary step
Is |2x+5|>= -3 a valid statement?
It is mentioned in one of the questions answer.
If valid, why? Can |2x+5| be equal to -3?
Regards,
Sushant
- by sushantsahaji
Mon Apr 25, 2016 7:40 pm- Forum: Problem Solving
- Topic: Not a question but an intermediary step
- Replies: 4
- Views: 1515
0.99999999/1.0001 - 0.99999991/1.0003 = A. 10^-8 B. 3(10^-8) C. 3(10^-4) D. 2(10^-4) E. 10^-4 Another approach is to recognize that both 9999.9999 and 9999.9991 can be rewritten as differences of squares . First, 0.99999999 = 1 - 0.00000001 = (1 - 0.0001)(1 + 0.0001) Similarly, 9999.9991 = 1 - 0.00...
- by sushantsahaji
Wed Apr 20, 2016 8:49 pm- Forum: Problem Solving
- Topic: Alternative method for this sum?
- Replies: 5
- Views: 2332
Alternative method for this sum?
0.99999999/1.0001-0.99999991/1.0003= A. 10^-8 B. 3 (10^-8) C. 3(10^-4) D. 2(10^-4) E. 10^-4 Following is my approach, but have done some approximation. Question = (99999999/10001- 99999991/10003)*10^-4 (Let # = 99999999 or 99999991= 10^8) =(#/10001-#/10003)*10^-4 =#( 1/10001-1/10003)*10^-4 =#{(10003...
- by sushantsahaji
Tue Apr 19, 2016 9:24 pm- Forum: Problem Solving
- Topic: Alternative method for this sum?
- Replies: 5
- Views: 2332
What is the value of w^-2? 1. w^-1 = 1/2 2. w^8 = 8 Required: w^-2 Statement 1: w^-1 = 1/2 Or 1/w = 1/2 Hence w = 2 and we can find w^-2 easily. No need to solve further Sufficient Statement 2: w^8 = 8 Hence (w^2) = 8^(1/4) = ∜8 Therefore w^(-2) = 1/∜8 Sufficient Correct Option: D Sushant, can ...
- by sushantsahaji
Tue Apr 19, 2016 1:34 pm- Forum: Data Sufficiency
- Topic: What is the value of w^-2?
- Replies: 9
- Views: 3888
What is the value of w^-2?
What is the value of w^-2?
1. w^-1 = 1/2
2. w^8 = 8
This is a misprinted question, But interesting! Wanted to check whether my ans correct.
My ans is A
Thanks,
Sushant
- by sushantsahaji
Sat Apr 16, 2016 10:05 pm- Forum: Data Sufficiency
- Topic: What is the value of w^-2?
- Replies: 9
- Views: 3888
Dear Brent, In statement 1, nth root of n is equal to the 4th root of 4. As the 4th root is even, will it not have dual roots,+&-? And if so, then how can we be sure of unique soln as the target question is considering cube root of 3,which will provide only 1 solition? Thanks & Regards, Sush...
- by sushantsahaji
Sat Apr 16, 2016 1:46 am- Forum: Data Sufficiency
- Topic: Is the nth root of n greater than the cube root of 3?
- Replies: 3
- Views: 3369
x > y^2 > z^4 Considering x > y^2 this implies x>y or x<y Similarly.. y^2 > z^4 ==> y > z^2 ==> y>z or z>y Also, x > z^4 ==> x > z^2 or x < z^2 ===> x > z or x < z or x < z or x > z So, I, II and III How did you get the following? Considering x > y^2 this implies x>y or x<y Pls explain this, it may...
- by sushantsahaji
Sun Jan 17, 2016 7:09 am- Forum: Data Sufficiency
- Topic: Kindly let me know how to approach this one?
- Replies: 5
- Views: 4813
A very easy method is to first simplify the concentrate hitch.
1 can juice con + 3 can water = 48 ounce juice
Total juice req= 1200ounce
if 48ounce - 1 can concentrate
then for 1200 ounce -1200/48= 25
thus ans 25 cans of concentrate
- by sushantsahaji
Wed Dec 23, 2015 10:05 am- Forum: Problem Solving
- Topic: Cans of OJ concentrate
- Replies: 11
- Views: 8304