Search found 9 matches
1/3 + 1 = 4/3 => |4/3| = 4/3adamsmith2009 wrote:For A - how does X = 1/3. If I plug it back into the equation it doesn't work. Or am I missing something?
1/3 - 1 = -2/3 => |-2/3| = 2/3 => 2 * 2/3 = 4/3
- by Kalvin
Thu Nov 19, 2009 4:26 pm- Forum: Data Sufficiency
- Topic: module
- Replies: 3
- Views: 1472
Is lxl< 1? => Is -1<x<1?mariah wrote:Is lxl< 1?
(1) lx + 1l = 2lx - 1l
(2) lx- 3l≠0
pls explain ... i am having trouble with modules
(1) lx + 1l = 2lx - 1l => x is = to 1/3 or 3 [Not sufficient]
(2) lx- 3l≠0 => x is not = to 3 [Not sufficient]
Answer is C
- by Kalvin
Thu Nov 19, 2009 3:07 pm- Forum: Data Sufficiency
- Topic: module
- Replies: 3
- Views: 1472
- by Kalvin
Thu Nov 19, 2009 4:17 am- Forum: Problem Solving
- Topic: Trip
- Replies: 3
- Views: 1593
Q Harry started a 6-mile hike with a full 10-cup canteen of water and finished the hike in 2 hours with 1 cup of water remaining in the canteen. If the canteen leaked at the rate of 1 cup per hour and Harry drank 3 cups of water during the last mile, how many cups did he drink per mile during the f...
- by Kalvin
Wed Nov 18, 2009 6:38 pm- Forum: Problem Solving
- Topic: Real GMAT question
- Replies: 2
- Views: 4782
- by Kalvin
Wed Nov 18, 2009 6:31 pm- Forum: Problem Solving
- Topic: Trip
- Replies: 3
- Views: 1593
Two equations:
x=men
y=women
total=1400
research essential = 1400 * .42 = 588
Eq 1 => x + y = 1400
and
Eq 2 => .36x + .5y = 588
Solve for y
- by Kalvin
Wed Nov 18, 2009 6:27 pm- Forum: Data Sufficiency
- Topic: College Teachers
- Replies: 3
- Views: 3131
Fixed cost can change. They just typically don't change based on your output.
palvarez's explanation is right on.
- by Kalvin
Wed Nov 18, 2009 6:08 pm- Forum: Data Sufficiency
- Topic: Total Cost
- Replies: 3
- Views: 1378
- by Kalvin
Wed Nov 18, 2009 5:59 pm- Forum: Data Sufficiency
- Topic: Average + Median
- Replies: 12
- Views: 2698
Probability of picking all 4 balls as orange = (6/11)(5/10)(4/9)(3/8) = 1/22 after cancelling
Probability of not picking all 4 balls as orange = 1 - (1/22) = 21/22
- by Kalvin
Wed Nov 18, 2009 5:19 pm- Forum: GMAT Math
- Topic: probability that not all balls are orange?
- Replies: 3
- Views: 4921