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This is a better explanation In contrast with the way he argued with his parents, Jonas was actually quite happy about his having to go away to camp for the summer. A. his having to go away to camp for the summer. B. him having to go away to camp for the summer. C. his having to be going away to cam...

by quocbao

Fri Apr 03, 2009 6:22 pm
Forum: Sentence Correction
Topic: SC from 800score
Replies: 8
Views: 2108

I got D But it takes me more than 2 mins :( let take: x is % of lights should be on y is % of lights should be off and of course x + y = 100 according to the question we have 40% lights should be off are on => 0.4y is the current % lights are on that should be off 10% lights should be on are off => ...

by quocbao

Fri Apr 03, 2009 8:40 am
Forum: Problem Solving
Topic: lights in a hotel
Replies: 8
Views: 2134

The question say 16th, then it should be 35 right ?

by quocbao

Fri Apr 03, 2009 2:28 am
Forum: Problem Solving
Topic: ps
Replies: 3
Views: 1066

Is it better ?

Let assume A is 100

=> B = 50, C = 150

The ratio will be

A : B : C = 100 : 50 : 150 = 2 : 1 : 3

Or C equal to 3 / (2 + 1 + 3) = 1/2 total

=> C get 1/2 money = 1/2 800 = 400

by quocbao

Fri Apr 03, 2009 1:20 am
Forum: Problem Solving
Topic: a project worth $800
Replies: 5
Views: 956

BUT when it says 75% compalined of fatigue it does not necessarily mean the rest 25 % did not complain of fatigue. They might have had 'no comments'
Quite a tricky question. This question should be listed in sentence correction :(

by quocbao

Fri Apr 03, 2009 1:11 am
Forum: Problem Solving
Topic: feelings of fatigue
Replies: 12
Views: 1332

Why it's 14, not 34 ?

what percent of interns do not complain for the feelings of fatigue during the shifts?
If it's 14, then the question should be
what percent of interns who receive more than 6 hours to sleep do not complain for the feelings of fatigue during the shifts?

by quocbao

Fri Apr 03, 2009 1:08 am
Forum: Problem Solving
Topic: feelings of fatigue
Replies: 12
Views: 1332

Is there a way not to guess the answer ?

I got the same idea with scooby and stuck there. Do you think that there is a way to solve the problem with out listing all possible combination ?

by quocbao

Fri Apr 03, 2009 12:48 am
Forum: Problem Solving
Topic: 6 people in 2 rows, from shorter to taller...
Replies: 9
Views: 12682

You're very quick bluementor.

I just open the topic and finish the calculation and you answered already :-D

4% is the same to me

by quocbao

Fri Apr 03, 2009 12:38 am
Forum: Problem Solving
Topic: Percentages
Replies: 2
Views: 840

Let pick number for this question

100 present for the original price, so 60 must be the current price, and 25% of 60 = 15 ( you can use 1/4 if you remember )

Then total discount is 15 + 40 = 55 or 55% of the original price

Then B

by quocbao

Fri Apr 03, 2009 12:34 am
Forum: Problem Solving
Topic: percentages again
Replies: 2
Views: 868

Can you explain why x,y,z is odd from statement 2 ?

We can also have x is odd, y z is even also ?

by quocbao

Fri Mar 27, 2009 9:51 am
Forum: Data Sufficiency
Topic: if x,y and z are integers, is x(y^2 + z^3) even ?
Replies: 4
Views: 919

Oh, I got it. thanks

darn the question

by quocbao

Fri Mar 27, 2009 9:49 am
Forum: Problem Solving
Topic: (x) = x + 1
Replies: 2
Views: 1086

Sorry for late replying. OA is B. This was my mistake when I post the question.

What I want to ask in this question is that whether there is a way to finish the question easier ? Like plugging the number back to the question ? Will it be faster ?

by quocbao

Fri Mar 27, 2009 9:46 am
Forum: Problem Solving
Topic: 20 mile course
Replies: 10
Views: 1241

(x) = x + 1

For any integer x, (x) is defined by the equitation (x) = x + 1. Which of the following is equal to (x)*2 - (x^2) for all integers x

A. 0
B. 2
C. (2x)
D. 2x
E. 2*(x)

[spoiler]OA is D , but why D. I think it should be (x)^2[/spoiler]

by quocbao

Wed Mar 25, 2009 4:03 am
Forum: Problem Solving
Topic: (x) = x + 1
Replies: 2
Views: 1086

20 mile course

On a 20 mile course, Pat bicycled at an avg rate of 39 miles / h for the first 12 min and , without a break, ran the rest of the distance at an avg rat of 8 miles / h. How many minutes did Pat take to cover the entire course ? A. 75 B. 105 C. 117 D. 150 E. 162 OA is C Is there an easy way to solve t...

by quocbao

Wed Mar 25, 2009 3:59 am
Forum: Problem Solving
Topic: 20 mile course
Replies: 10
Views: 1241

if x,y and z are integers, is x(y^2 + z^3) even ?

if x,y and z are integers, is x(y^2 + z^3) even ?

(1) x is odd
(2) xyz is odd

OA is B , but I got C

by quocbao

Wed Mar 25, 2009 3:55 am
Forum: Data Sufficiency
Topic: if x,y and z are integers, is x(y^2 + z^3) even ?
Replies: 4
Views: 919