GMAT Data Sufficiency Discussions

[IT Sucks]

Originally Posted by nitiman

Is it D?
According to first statement and given data if m=n then p is also even and n+2=< p =<2n-2. In this case the remainder can be anything between 2 to 2n-2 which is always greater than 1.
According to sec statement LCM of m and p is 30. Factors of 30 are 1, 2, 3, 5, 6, 10, 15, 30. m>2 So possible values of m and p are 3 and 10 or 5 and 6 and in both the cases remainder is 1.
So both statements are individually sufficient.

i concur !!
whats the rite answer
but i ve read in some books tht although its not necessary for the two answer to be the same(calculated frm the two separate options) but a question has never been cited to give two different answers.
i also faced a couple of similar questions whr i marked D as the answer but at the end found myself to be wrong...ans was either A or B
but thrs no flaw in the reasoning given above..
plz explain......

[coolest]

Are at least 10% of the people in Country X who are 65 years old or older employed?

1) In Country X, 11.3% of the population is 65 years old or older.

2) In Country X, of the population 65 years old or older, 20% of the men and 10% of the women are employed. x

[nitiman]

Originally Posted by coolest

Are at least 10% of the people in Country X who are 65 years old or older employed?

1) In Country X, 11.3% of the population is 65 years old or older.

2) In Country X, of the population 65 years old or older, 20% of the men and 10% of the women are employed. x

Its B.
Irrespective of no of men or women the percentage cannot drop below 10.

[c153]

[quote=nairpraveenk;630800]

What is the number of female employees in Company

X ?

(1) If Company

X were to hire 14 more people and all of these people were females, the ratio of the number of male employees to the number of female employees would then be 16 to 9.

(2) Company

X has 105 more male employees than female employees.


is it C??

[Simz]

[quote=c153;695393]

Originally Posted by nairpraveenk

What is the number of female employees in Company

X ?

(1) If Company

X were to hire 14 more people and all of these people were females, the ratio of the number of male employees to the number of female employees would then be 16 to 9.

(2) Company

X has 105 more male employees than female employees.

is it C??

I took my GMAT long time back so I don’t remember option corresponds to what but the answer is : Both statements are required. Which I guess sud be C

Explaination: 1) A is not sufficient as it gives the current ratio that doesn’t give us a single solution.

B) No single solution.possible.

Using Both- Current ratio- 16:9. Difference 16-9=7.

So number of female employees: [{current difference (105)/ ratio difference (7)}* Ratio of female employees (9)] – 14
= [{105/7}*9]-14 = [ 15*9 ] – 14 = 135-14 = 121

Hence the answer is C

[nitiman]

Originally Posted by c153

where do we find answers to these??

Please post DS questions in the corresponding thread.

I request the Mods to move the above posts to DS section...

[studio512]

A jewelry dealer initially offered a bracelet for sale at an asking price that would give a profit to the dealer of 40 percent of the original cost. What was the original cost of the bracelet?
(1) After reducing this asking price by 10 percent, the jewelry dealer sold the bracelet at a profit of $403.
(2) The jewelry dealer sold the bracelet for $1,953.

can some one help me in this ;;the answer given is A but with option 2 also we can get the answer??

thanks in adv

[nitiman]

Originally Posted by studio512

A jewelry dealer initially offered a bracelet for sale at an asking price that would give a profit to the dealer of 40 percent of the original cost. What was the original cost of the bracelet?
(1) After reducing this asking price by 10 percent, the jewelry dealer sold the bracelet at a profit of $403.
(2) The jewelry dealer sold the bracelet for $1,953.

can some one help me in this ;;the answer given is A but with option 2 also we can get the answer??

thanks in adv

If you consider the asking price and the selling price to be the same then you can get the answer from 2nd statement also else not.
Where did u pick this question from?

[studio512]

Originally Posted by nitiman

If you consider the asking price and the selling price to be the same then you can get the answer from 2nd statement also else not.
Where did u pick this question from?

hi man thanks.i got this from a book called gmat plus. it is free to download as i have found on one site while searching for GMAT tips;

here is the link it consists of all the sections

My Home Page

bye

[nitiman]

Some good DS questions i came across...

1. When the positive integer x is divided by 4, is the remainder equal to 3?
(1) When x/3 is divided by 2, the remainder is 1.
(2) x is divisible by 5.


2. In a single row of yellow, green and red colored tiles, every red tile is preceded immediately by a yellow tile and every yellow tile is preceded immediately by a green tile. What color is the 24th tile in the row?
(1) The 18th tile in the row is not yellow.
(2) The 19th tile in the row is not green.


3. If a and b are integers, and |a| > |b|, is a · |b| < a – b?
(1) a < 0
(2) ab 0




4. What is the standard deviation of Q, a set of consecutive integers?
(1)Q has 21 members.
(2)The median value of set Q is 20