Search found 22 matches
1997: rx1
1999: r (1 + x/100)(1 - y/100)
-> annual rent in 1997 = annual rent in 1998 <=> 1 + x/100)(1 - y/100) = 1
-> annual rent in 1997< annual rent in 1998 <=> 1 + x/100)(1 - y/100) > 1
- by TRANGZON
Thu Jan 14, 2010 9:16 pm- Forum: Data Sufficiency
- Topic: Annual Rent
- Replies: 7
- Views: 3224
- by TRANGZON
Thu Dec 10, 2009 8:38 pm- Forum: I just Beat The GMAT!
- Topic: I beat the GMAT....660!!!
- Replies: 1
- Views: 2408
- by TRANGZON
Sat Nov 21, 2009 8:13 am- Forum: Data Sufficiency
- Topic: What is the value of x*?
- Replies: 29
- Views: 13537
Plug x=y+1 into (x+y)^2 + (x-y)^2
(y+1+y)^2 + (y+1-y)^2 = (2y+1)^2 + 1
Cannot conclude: (2y+1)^2 + 1=170 -> B insufficient
While (x+y)^2 + (x-y)^2 = x^2 + 2xy + y^2 + x^2 - 2xy + y^2 = 2(x^2+y^2) = 2*85=170 -> A sufficient
- by TRANGZON
Sat Nov 21, 2009 6:41 am- Forum: Data Sufficiency
- Topic: Does (x+y)^2 + (x-y)^2 = 170?
- Replies: 10
- Views: 3297
- by TRANGZON
Fri Aug 29, 2008 3:40 pm- Forum: Problem Solving
- Topic: distance from A
- Replies: 2
- Views: 1217
call 5 stop are a, b, c, d, e
counter possible tickets:
ab ac ad ae
bc bd be
cd ce
de
the answer is 4+3+2+1=10
- by TRANGZON
Mon Jul 28, 2008 2:39 pm- Forum: Problem Solving
- Topic: P&C
- Replies: 6
- Views: 1701
total day workers:x total boxes each day worker produced:y --> day workers produced totally: xy total night workers:4/5x total boxes each night worker produced:3/4y --> night workers produced totally: 3/4y*4/5x=3/5xy -->day and night workers produced totally: 3/5xy+xy=8/5xy the fraction day workers ...
- by TRANGZON
Fri Jul 25, 2008 10:56 pm- Forum: Problem Solving
- Topic: Work Problem
- Replies: 10
- Views: 2122
x/(x+y)*10 + y/(x+y)*20=k (10x+20y)/(x+y)=k 10(x+y)/(x+y) + 10y/(x+y)=k 10+10y/(x+y)=k Now: plug in 10y/(x+y)=0 --> impossible (y>0) 10y/(x+y)=2 --> 10y=2(x+y) --> 4y=x --> impossible (x<y) 10y/(x+y)=5 --> x=y --> impossible (x<y) 10y/(x+y)=8 --> y=4x --> POSSIBLE 10y/(x+y)=8 --> 2x=-y --> impossibl...
- by TRANGZON
Fri Jul 25, 2008 2:57 pm- Forum: Problem Solving
- Topic: Number system sets
- Replies: 4
- Views: 2622
- by TRANGZON
Sun Jul 20, 2008 9:40 pm- Forum: Data Sufficiency
- Topic: GMAT Prep Geometry
- Replies: 15
- Views: 8964
the animals are afflicted with fleas: 1/3x + 1/5y the smallest animals afflicted --> y > x x=3 --> y=57 not divisable 5 x=6 --> y=54 not divisable 5 x=9 --> y=51 not divisable 5 x=12 --> y=48 not divisable 5 x=15 --> y=45 divisable 5 --> ACCEPTED --> the animals are afflicted with fleas: 1/3x15 + 1/...
- by TRANGZON
Sun Jul 20, 2008 8:34 pm- Forum: Problem Solving
- Topic: Fleas
- Replies: 3
- Views: 1676
(1) m-3z>0 --> m>3z --> insuff
(2) 4z-m>0 --> insuff
(1) + (2) --> m - 3z + 4z - m > 0 --> z>0
(1) m>3z
-> m>0
--> m+z >0
--> C
What is OA?
- by TRANGZON
Wed Jul 16, 2008 9:21 pm- Forum: Problem Solving
- Topic: Best Approach to solve Inequlity type of Questions
- Replies: 4
- Views: 1193
June 25 - 1982 - Friday
June 25 - 1983 - Saturday
June 25 - 1984 - Saturday (due to the leap year, 366days/year)
June 25 - 1985 - Sunday
June 25 - 1986 - Monday
June 25 - 1987 - Tuesday
- by TRANGZON
Wed Jul 16, 2008 5:50 pm- Forum: Problem Solving
- Topic: Problem on calendars
- Replies: 4
- Views: 4147
- by TRANGZON
Wed Jul 16, 2008 4:38 pm- Forum: Problem Solving
- Topic: CUPS OF MILK
- Replies: 1
- Views: 4938
purchased price $60
selling price X
selling price that equalled the purchase price of the jacket plus a markup that was 25 percent of the selling price
--> 0.25X + 60 = X
--> X = 80
After 20 percent discount 80 x 0,8 = 64
Profit 4 --> C
- by TRANGZON
Wed Jul 16, 2008 4:34 pm- Forum: Problem Solving
- Topic: PROFITS.....
- Replies: 1
- Views: 1220
- by TRANGZON
Wed Jul 16, 2008 4:28 pm- Forum: Problem Solving
- Topic: ADDING FRACTIONS
- Replies: 1
- Views: 1179