Problem Solving (PS) | Re: Of 200 people surveyed, 80 percent own a cellular phone and 45 percen

January 7, 2019, 12:00 am

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NandishSS wrote:

evannolimit wrote:

Of 200 people surveyed, 80 percent own a cellular phone and 45 percent own a pager. If all 200 people surveyed own a cellular phone, or a pager, or both, what percent of those surveyed either do not own a cellular phone or do not own a pager?

(A) 35%
(B) 45%
(C) 55%
(D) 65%
(E) 75%

Spoiler: ::

HI Bunuel ,niks18 ,Gladiator59 ,

either do not own a cellular phone or do not own a pager Does it mean only a cellular phone and only
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Problem Solving (PS) | Re: If David paints houses at the rate of h houses per day, how many house

January 7, 2019, 12:00 am

≫ Next: Problem Solving (PS) | The number can be expressed as (63 - 36*3^(1/2))^(1/2) can be expresse

≪ Previous: Problem Solving (PS) | Re: Of 200 people surveyed, 80 percent own a cellular phone and 45 percen

Bunuel wrote:

If David paints houses at the rate of h houses per day, how many houses does he paint in d days, in terms of h and d?

A. h/d
B. hd
C. (h + d)/2
D. h - d
E. d/h

Given: David can painth houses in1 day
This means David can paintdh houses ind days[If we multiply the number of workdays by d, the OUTPUT is also multiplied by d]

Answer: B

Cheers,
Brent
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Problem Solving (PS) | The number can be expressed as (63 - 36*3^(1/2))^(1/2) can be expresse

January 7, 2019, 12:00 am

≫ Next: Problem Solving (PS) | Re: It takes 6 people 6 days to do a job. How many days would it take 2 pe

≪ Previous: Problem Solving (PS) | Re: If David paints houses at the rate of h houses per day, how many house

I think it's important to note that once we get tohere:

$63 - 36 \sqrt{3} = x^2 + 3y^2 + 2xy \sqrt{3}$

The reason we can set$-36 \sqrt{3}$ equal to$2xy \sqrt{3}$ is because we know from the question that$x$ and$y$ are integers. If we didn't know that$x$ and$y$ were integers, then we would have more algebra to do and several more possibilities for potential solutions. For example,$x = 3$ and$y = \sqrt{3} - 3$ would be correct solutions to the equation.

Also, I think EgmatQuantExpert
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Problem Solving (PS) | Re: It takes 6 people 6 days to do a job. How many days would it take 2 pe

January 7, 2019, 12:00 am

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Bunuel wrote:

It takes 6 people 6 days to do a job. How many days would it take 2 people working at the same rate to do the job?

A. 3
B. 6
C. 12
D. 16
E. 18

Let's assign a "nice" value to the job (i.e., a value that works well with the given numbers: 6, 6, 2)
Let's say the job consists of making36 widgets

It takes 6 people 6 days to do a job.
In other words, it takes 6 people 6 days to make36 widgets.
This means 6 people can make 6 widgets in 1 day [If we divide the number of workdays by 6, the OUTPUT is divided by 6]
It also means 1 person can make
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Problem Solving (PS) | Re: If Jake loses 8 pounds, he will weigh twice as much as his

January 7, 2019, 12:00 am

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Data Sufficiency (DS) | Re: If a is a 3-digit integer and b is a 3-digit integer, is the units

January 7, 2019, 12:00 am

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Problem Solving (PS) | Re: At a conference, one team is made up of 4 men and 5 women. Four presen

January 7, 2019, 12:00 am

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Quant Question Archive [LOCKED] | Re: 5 men prepaers 10 toy in 6 days working 6 hours a day. In

January 7, 2019, 12:00 am

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Data Sufficiency (DS) | Re: If triangle ABC is an isosceles triangle

January 7, 2019, 12:00 am

≫ Next: Problem Solving (PS) | Re: A builder purchases 25 windows at 25 percent off the total price of $1

≪ Previous: Quant Question Archive [LOCKED] | Re: 5 men prepaers 10 toy in 6 days working 6 hours a day. In

mikemcgarry wrote:

If triangle ABC is an isosceles triangle, what is ∠ABC?

(1) ∠CAB = 45 degrees
(2) ∠BCA = 90 degrees

Target question: What is ∠ABC?

Given: Triangle ABC is an isosceles triangle
So,∆ABC has 2 equal angles

Statement 1: ∠CAB = 45 degrees
Since∆ABC has 2 equal angles , there are two possible triangles that satisfy statement 1:
Case a ∠CAB = 45, ∠BCA = 45 and ∠ABC = 90. In this case, the answer to the target question is∠ABC = 90 degrees
Case b ∠CAB = 45, ∠BCA
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Problem Solving (PS) | Re: A builder purchases 25 windows at 25 percent off the total price of $1

January 7, 2019, 12:00 am

≫ Next: Quant Question Archive [LOCKED] | Re: Of the 600 residents of Clermontville, 35% watch the

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Archit3110 wrote:

Bunuel wrote:

A builder purchases 25 windows at 25 percent of the total price of $1,200. If the builder receives an additional discount of $75 for the purchase, how much did each window cost her?

A. $48
B. $45
C. $36
D. $33
E. $25

Bunuel :
is the question statement or answer choices given correct?

__
Edited. Thank you.
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Quant Question Archive [LOCKED] | Re: Of the 600 residents of Clermontville, 35% watch the

January 7, 2019, 12:00 am

≫ Next: GMAT Club Tests | Re: M23-06

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GMAT Club Tests | Re: M23-06

January 7, 2019, 12:00 am

≫ Next: Problem Solving (PS) | Re: Point P lies on the equation y= x^2 - 1 and Point Q lies on the equati

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kakun wrote:

I think this is a poor-quality question and the explanation isn't clear enough, please elaborate. Hi,

I couldn't understand the explanation, can someone please explain it using the diagram.

Thanks

Have you checked discussion above?

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Problem Solving (PS) | Re: Point P lies on the equation y= x^2 - 1 and Point Q lies on the equati

January 7, 2019, 12:00 am

≫ Next: Problem Solving (PS) | Re: A box contains 4 red chips and 2 blue chips. If two chips are selected

≪ Previous: GMAT Club Tests | Re: M23-06

Does it asks max(y) - min(y) or min(y) - max(y)..I got confused

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Problem Solving (PS) | Re: A box contains 4 red chips and 2 blue chips. If two chips are selected

January 7, 2019, 12:00 am

≫ Next: Problem Solving (PS) | Re: A hotel had 180 rooms numbered from 1 to 180. The rooms numbered from

≪ Previous: Problem Solving (PS) | Re: Point P lies on the equation y= x^2 - 1 and Point Q lies on the equati

Question...

Why is (4/6)(2/5) + (2/6)(4/5) correct answer?

The way I am interpreting this question is that whatever you draw on the first attempt does not matter.

If you get RED chip on the first draw, you just need to draw blue chip on the second draw, which is probability of 2/5.
If you get BLUE chip on the 1st draw, you just need to draw red chip on the 2nd draw, which is probability of 4/5.

Because what you draw on your 1st pick doesn't matter, wouldn't we just add (2/5) + (4/5)?

Please
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Problem Solving (PS) | Re: A hotel had 180 rooms numbered from 1 to 180. The rooms numbered from

January 7, 2019, 12:00 am

≫ Next: Problem Solving (PS) | Re: How many integral values of k are possible, if the lines 3x+

≪ Previous: Problem Solving (PS) | Re: A box contains 4 red chips and 2 blue chips. If two chips are selected

Mahfuz1469 wrote:

Afc0892 wrote:

Rooms common for both Kris and Michel = LCM(3,4) = Multiple of 12 from 25 to 180, i.e, 36 to 180. = (180-36)/12 + 1 = 13.
Number of rooms for George = 156-52-39+13 = 78.

13 rooms are common to both Kris and Michel. So Kris served 52-13=39 rooms and Michel served 39-13=26 rooms.
George served=156-39-26=91 rooms.

Hope this helps.

Correct me if I amwrong.

Your approach is correct. OA also same
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Problem Solving (PS) | Re: How many integral values of k are possible, if the lines 3x+

January 7, 2019, 12:00 am

≫ Next: Problem Solving (PS) | A class of 40 students is to be divided into smaller groups. If each

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The value 4k^2+9>0 will always be positive its the numerator which will make the diff

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Problem Solving (PS) | A class of 40 students is to be divided into smaller groups. If each

January 7, 2019, 12:00 am

≫ Next: Problem Solving (PS) | Gheri is n years old. Carl is 6 years younger than Gheri and 2 years

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A class of 40 students is to be divided into smaller groups. If each group is to contain 3, 4, or 5 people, what is the largest number of groups possible?

A. 8
B. 10
C. 12
D. 13
E. 14

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Problem Solving (PS) | Gheri is n years old. Carl is 6 years younger than Gheri and 2 years

January 7, 2019, 12:00 am

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Gheri is n years old. Carl is 6 years younger than Gheri and 2 years older than Jean. What is the sum of the ages of all three?

A. 3n + 16
B. 3n + 4
C. 3n − 4
D. 3n − 8
E. 3n − 14

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Problem Solving (PS) | Doris spent 2/3 of her savings on a used car, and she spent 1/4 of her

January 7, 2019, 12:00 am

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Doris spent 2/3 of her savings on a used car, and she spent 1/4 of her remaining savings on a new carpet. If the carpet cost her $250, how much were Doris’ original savings?

A. $1,000
B. $1,200
C. $1,500
D. $2,000
E. $3,000

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PS Archive | Test topic 2

January 7, 2019, 12:00 am

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This topic have been merged with: http://gmatclub.com/forum/topic-285930.html

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