GMAT Problem Solving Discussions

[mucool]

Originally Posted by nairpraveenk

A jar contains 30 marbles, of which 20 are red and 10 are blue. If 9 of the marbles are removed, how many of the marbles left in the jar are red?

(1) Of the marbles removed, the ratio of the number of red ones to the number of blue ones is 2 : 1.
(2) Of the first 6 marbles removed, 4 are red.

A Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D EACH Statement ALONE is sufficient.
E Statements (1) and (2) TOGETHER are NOT sufficient.

1 alone is sufficient...14 are remaining now after u take out 6
2 is not...u dont know bout the the rest three...

so A is tha answer...

these are pretty simple...I mean...you can put up some gud ones..involving number theory and fractions...inequalities..

[nairpraveenk]

Originally Posted by mucool

1 alone is sufficient...14 are remaining now after u take out 6
2 is not...u dont know bout the the rest three...

so A is tha answer...

these are pretty simple...I mean...you can put up some gud ones..involving number theory and fractions...inequalities..

Yeah I shall post some good ones involving number theory and fractions.

[ess_a]

Originally Posted by Baby

Hi

You can post all the questions in a single post rather than using multiple posts. And please wait for the junta to solve it. What's the point in giving out the questions and solutions at the same time. You could, say, post five questions...provide a deadline...and then give out teh solutions

Mridul

OR, you can do one thing. Give only one question in one post BUTTT give a UNIQUE question NO. to each. Any one who solves, should post by quoting the respective question no..

[ess_a]

post 5
Ans : d
1) Rel. speed = 10mph. So time = 1mile/10mph = 0.1h
2) 3min --> (1 - 0.5)= 0.5mile. So 1 more mile in 6 min.

[ess_a]

POST 6:

Ans: a
1) 100 employees with coll degrees
=> 50% of empl = 100
=> total employees = 200.
So above 40 = 60% of 200 = 120.
No. of empl above 40 with masters = 30% of 120 = 36.

2) all are percentages. So a number value cant be obtained.

[ess_a]

Post 7
I think the answer should be E

[ess_a]

Post 7
I think the answer should be E.

[nairpraveenk]

Originally Posted by nairpraveenk

Last Friday a certain shop sold 3/4 of the sweaters in its inventory. Each sweater sold or $20. What was the total revenue last Friday from the sale of these sweaters?

(1) When the shop opened last Friday, there were 160 sweaters in its inventory.
(2) All but 40 sweaters in the shop’s inventory were sold last Friday.

A Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D EACH Statement ALONE is sufficient.
E Statements (1) and (2) TOGETHER are NOT sufficient.

Answer choice would be (D )

Given: 3/4 sweaters sold. Each for 20$
Analysis:
Using option 1 )
There were 160 sweaters initially.
3/4 of 160 = 120. Thus revenue = 120 * 20 = 2400$

Using option 2 )
All but 40 sweaters in the shop’s inventory were sold
i.e X/4 = 40 thus x = 160
3/4 of 160 = 120


Thus each alone can provide an answer.!!

[nairpraveenk]

Hey Qoute the problem, its kinda difficult to analyse .

Yes, from next time i will post the Question no. Wait till monday, and I will post more fundoo, GMAT problems.

[nairpraveenk]

Originally Posted by ess_a

Post 7
I think the answer should be E

Hey Qoute the problem, its kinda difficult to analyse .

Yes, from next time i will post the Question no. Wait till monday, and I will post more fundoo, GMAT problems.