gmat731

Thanks for your inputs, KILLGMAT. You are correct, we should not be attempting those GMAT Prep problems. But I feel we should have as much practice as possible for those problems as they are the real reflection of what we will be seeing on exam day. Hence I started concentrating on those problems from the time I started lurking on TM. Specially on Quant the ratio is more. Anyways, good luck with you applications.

Let me know what you guyz feel about this.

My GMATPrep 2 scores were 600 660 ( some were REPEAT) But is it correct measure of what we can expect in real GMAT score? Most of the scores that I have seen in the debriefs are +/- 20-30 around GMAT Prep score. So what I really want to know is do people see questions which they have already attempted in various sources? I saw some good % of questions were from OG-11 and OG-10. And most of us solve problems from both of these sources. Whereas in real GMAT we would be expecting totally new questions. I feel seeing a question which you have already solved takes lesser time and you are sure of the answer too. So I feel even if we see some decent score in practice the performance on D-Day that would really matter the most? Please comment and share your thoughts on the same.

ps231, so u r saying that t1 + t2 = 10 and t1 = X/50 and t2 = 530 -X/60 so putting it all together we have only one unknown. Yep make sense. Thanks.

For Manufacturer M, the cost C of producing X Units of its product per month is given by c=kx+t, where c is in dollars and k and t are constants. Last month if Manufacturer M produced 1,000 units of its product and sold all the units for k+60 dollars each, what was Manufacturer M's gross profit on the 1,000 units? 1). Last month, Manufacturer M's revenue from the sale of the 1,000 units was 150,000. 2). Manufacturer M's cost of producing 500 Units in a month is 45,000 less than its cost of producing 1,000 units in a month. OA not available.

Thanks Somu. Seems to be spot on. Unfortunately I dont have a OA for this.

Area of parallelogram = Base * Height So H = 3. So the side (length 6) and Height form a 30-60-90 triangle. So angle opposite to Height will be 30. So those 2 opposite angles will be equal and the other 2 angles will be 360-2(30) = 300/2 = 150 each, whcih is not part of the ans choices. Hence Ans A.

Is XY>0? 1). X-Y>-2 2). X-2Y

On his trip from Alba to Bento, Julio drove the first x miles at an average rate of 50 miles per hour and the remaining distance at an average rate of 60 miles per hour, how long did it take Julio to drive the x miles? 1). on this trip, Julio drove for a total of 10 hours and drove a total of 530 miles 2). on this trip, it took Julio 4 more hour to drive the first x miles than to drive the remaining distance OA is not known.

Will go with E. was advised that is better here and was interrogated is parallel with "was advised" B misses the verb was after and.

I saw this question in my GMAT Prep 2. The OA is A. The question read exactly as given by itsmyturn. Not sure if it really is a typo. I also saw the same question in OG 10 I guess.

good one bomond.

Ans D. For such problems drawing a chart is best approach. I am not sure if I can upload given my low post count Total Sobel voters = M + F = 70 Total Male = 60 Female = 100 - 60 = 40 Total Lange Female = 35% of 40 = 14 Female-Sobel = 40 - 14 = 26 Male-Sobel = 70-26=44 PennMI actually got the answer correct but went one step ahead to calculate the percentage. But don't forget all the values we are dealing are percentage so there is no need to calculate percentage. We already have one with us. :)

Total student = 30 Mean = 2 Total books = 60 12 had 1 book = 12 10 had 2 book = 20 which leave 60 -32 = 28 for the last group. So to find max lets consider 5 of them had 3. 28 - 5 * 3 = 28 - 15 = 13 HTH

Babuism, Are you asking why can't it be 210 or 195? As no of hard cover is >=6 so with minimum hardcover we get 238 as total and with 6 it would be 263 but the total is less than 260. The mistake I did was I missed the least all together and answer was A. I made another silly mistake in addition 88 + 150 = 278, it shud be 238. 4 days to go for the D-Day but the no of silly mistakes are not going down.

Thanks Makumajon for giving another resourceful insight into GMAT's maths wonderland.

Bomond, The probability can be definitely found with both the statements together. But shouldn't it be 21/3521 which is 3/503.? Also I think with just the stmt one alone we can find the probability. p(d) = no of defective / total Defective - d Non-defective - nd d/nd = 3/500 nd = 500d/3 T = d + 500d/3 T = 503d/3 p(d) = d * 3/ 500d = 3/503

Juan bought some paperback books that cost $8 each and some hardcover books that cost $25 each. If Juan bought more than 10 paperback books, how many hardcover books did he buy? (1) The total cost of all the hardcover books that Juan bought was at least $150. (2) The total cost of all the books that Juan bought was less than $260.

1) The possible outcomes for sum of 8 are 2,6 : 3,5 : 4,4 : 5,3 : 6,2 ( = 5) possibility of one of them being 5 is 2 So probability of card drawn being 5 is 2/5 Agree with other 2 solutions from bomond.

What is the source of this pblm? Is the OA dependable. The ans in my earlier post is definitely wrong. But it is not 15 too. After correcting my mistake and also by using the below formula the ans is 25 which is D. This is the formula they have used for one of the problems in other thread. Try using this and see what ans you get. A+B+C - (A and B)-(B and C) - (C and A)- (A and B and C) -(A and B and C).

The OA was posted in other thread as part of the spoiler. Pls have a look. http://www.www.urch.com/forums/gmat-problem-solving/95420-combination.html

Terrific Makumajon!!!! Clear and concise. How does it strike you? The method to divide makes it so clear and easy to approach.

We can use venn diagram for this one. Milk - M Chicken - C Apples - A a = M+C b = M+A c = C+A We need to find a + b + c M = 60 (which include M+C M+A and part of all 3) So to get just M M = 60 - ( a + b + 10 ) Like you can do it for others to get 60 + 50 + 35 - 30 - 2(a+b+c) = 100 a+b+c = 15/2 = 7.5

Thanks Bholebaba.

Hi Kiranlegend, The mistake people make as Makumajon once pointed out in one of the post is given, X^2 > 25 So if you take square root then these are the steps X^2 > +/_ 25 therefore, X > +/- 5 So either X > 5 or X > -5. In short the inequality remains the same ">" but it has both the signs for 5 on RHS. And from stmt II X > -3.5 which means the X cannot be greater than X > -5 as it contradicts with stmt II. In my earlier reply If you see X^2 - 25 > 0 (X -5) (X+5) > 0 therefore, X > 5 or X > -5 Hope this helps.