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GMATPrep Software DS question

In the figure, if X and Y are each less than 90 and PS || QR, is the length of segment PQ less than the length of segment SR

1. X > Y
2. X + Y > 90

the pic depicts 2 ||el lines forming a parellologram with angles x and y

by rajeshvellanki

Sun Apr 29, 2007 12:13 pm
Forum: Data Sufficiency
Topic: GMATPrep Software DS question
Replies: 2
Views: 1684

here is my take on in.

Basically SP-CP=Profit

case1: 20% profit

96-x=x/5
6x/5=96

x=80
20%(80)=16$ profit

case2:20% losss
Cp-SP=loss

x-96=x/5

4x/5=96
x=120

20%(120)=24$ loss


Case2-case1=24-16=8$ loss

What are the answer choices?

by rajeshvellanki

Thu Apr 26, 2007 10:13 am
Forum: Problem Solving
Topic: gmat prep question
Replies: 7
Views: 5341

1000 SC Q#2

2. A 1972 agreement between Canada and the United States reduced the amount of phosphates that municipalities had been allowed to dump into the Great Lakes. (A) reduced the amount of phosphates that municipalities had been allowed to dump (B) reduced the phosphate amount that municipalities had been...

by rajeshvellanki

Wed Apr 25, 2007 9:23 pm
Forum: Sentence Correction
Topic: 1000 SC Q#2
Replies: 25
Views: 18410

1000 cr 711

'IT' must always follow a noun, not an action
eg: Frank says i took his cookies, but i didn't do it --> wrong
Frank says i took his cookies, btu i didn't take them. --> right

Same mistake in posting:
https://www.beatthegmat.com/viewtopic.php?t=2395

R

by rajeshvellanki

Mon Apr 23, 2007 8:05 pm
Forum: Sentence Correction
Topic: 1000 cr 711
Replies: 8
Views: 5889

is the answer B?

as far as i know

'IT' must always follow a noun, not an action
eg: Frank says i took his cookies, but i didn't do it --> wrong
Frank says i took his cookies, btu i didn't take them. --> right

by rajeshvellanki

Mon Apr 23, 2007 7:47 pm
Forum: Sentence Correction
Topic: 1000 cr 716
Replies: 4
Views: 3465

HCF or GCD of 3,6 and 18 is 3. This is the first time they meet.

t=750/3=250

Answer C

by rajeshvellanki

Mon Apr 23, 2007 3:52 pm
Forum: Problem Solving
Topic: Difficult Math Problem #122 - Rates
Replies: 4
Views: 1862

pretty simple man... 1/5=0.2

option 3 is median and what they gave is mean.. so mean <> median.

2(a+b+c+d+e) and moving decimal place by 1 is nothing but 1/5=0.2

Hope you got it.

So answer is C.

R

by rajeshvellanki

Mon Apr 23, 2007 1:56 pm
Forum: Problem Solving
Topic: test31 #11
Replies: 2
Views: 1487

okay here you go:

The only number which satisfies the given condition is : 101

and a(n)=a(1)+(n-1)d

199=100+(n-1)d

==> n=100 terms

Probability of selecting 1 number out of 100 numbers is 1/100 hence D

R

by rajeshvellanki

Mon Apr 23, 2007 11:43 am
Forum: Problem Solving
Topic: test23 3 13
Replies: 2
Views: 1505

for 1/(x+y) to be zero x+y should be infinity. so the best answer is C.

by rajeshvellanki

Sun Apr 22, 2007 10:05 am
Forum: Problem Solving
Topic: ps500 test25#8
Replies: 5
Views: 1627

4c1 x 5c2 =40

by rajeshvellanki

Sun Apr 22, 2007 9:54 am
Forum: Problem Solving
Topic: GMATPrep
Replies: 3
Views: 1764

hope this sound more easier!!

20

4f 16m

1/5 4/5 --> phenomenon

increase = (4/5 - 1/5)/(1/5) = 3/5 =0.6

by rajeshvellanki

Sat Apr 21, 2007 3:49 pm
Forum: Problem Solving
Topic: 500 ps test22 #14
Replies: 4
Views: 3331

best way is to take the HCF:

2^2/2^12 + 2/2^12 + 2/2^12 =8/2^12= 2^3/2^12= 1/@^9

by rajeshvellanki

Sat Apr 21, 2007 3:33 pm
Forum: Problem Solving
Topic: 500 ps test26 #17
Replies: 4
Views: 1911

must remeber the following, very easy if you follow the rythm that's going on.

E(+-)E = E
E(+-)O= O
O(+-)O = E
O-E = O

ExE = E
Ex O= E
OxO = O

by rajeshvellanki

Sat Apr 21, 2007 3:28 pm
Forum: Problem Solving
Topic: OG #242
Replies: 3
Views: 1626

lets say H-->x and O--y

H/0=2/16=1/8==> y=8x

x+y=144

9x=144

x=144/9=16

==> H=16grams and O=8x=8(16)=128

==>0=128

What are the answer choices?

by rajeshvellanki

Sat Apr 21, 2007 3:12 pm
Forum: Problem Solving
Topic: don't understand ratio question
Replies: 3
Views: 1905