Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized for You

we will pick new questions that match your level based on your Timer History

Track Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:

Re: Material A costs $3 per kilogram, and material B costs $5 pe [#permalink]
22 Apr 2011, 22:50

tejal777 wrote:

Material A costs $3 per kilogram, and material B costs $5 per kilogram. If 10 kilograms of material K consists of x kilograms of material A and y kilograms of material B, is x > y? (1) y > 4 (2) The cost of the 10 kilograms of material K is less than $40.

umm...(D) is it??

(1) y>4 y=4.1kg; x=4.2kg x=4.2kg; y=4.2kg Not Sufficient.

(2) y=1kg; x=2kg; cost=2*3+1*5=11<40 y=2kg; x=1kg; cost=2*1+2*5=12<40 Not Sufficient.

Combining both: y=4.5;x=5; cost=5*3+4.5*5=15+22.5=37.5<40 y=5;x=1; cost=1*3+5*5=3+25=28<40 Not Sufficient.

Ans:"E"

P.S.: It is not given that material k contains ONLY material A and B. Had it been given, "B" alone would have sufficed. _________________

Re: Material A costs $3 per kilogram, and material B costs $5 pe [#permalink]
23 Apr 2011, 01:54

fluke wrote:

tejal777 wrote:

Material A costs $3 per kilogram, and material B costs $5 per kilogram. If 10 kilograms of material K consists of x kilograms of material A and y kilograms of material B, is x > y? (1) y > 4 (2) The cost of the 10 kilograms of material K is less than $40.

umm...(D) is it??

(1) y>4 y=4.1kg; x=4.2kg x=4.2kg; y=4.2kg Not Sufficient.

(2) y=1kg; x=2kg; cost=2*3+1*5=11<40 y=2kg; x=1kg; cost=2*1+2*5=12<40 Not Sufficient.

Combining both: y=4.5;x=5; cost=5*3+4.5*5=15+22.5=37.5<40 y=5;x=1; cost=1*3+5*5=3+25=28<40 Not Sufficient.

Ans:"E"

P.S.: It is not given that material k contains ONLY material A and B. Had it been given, "B" alone would have sufficed.

if it says item k consist of A and B i hope it means it consists of a and b only otherwise so many GMAT would have answer as E

this question will too simple to answer if assume what you are saying

Re: Material A costs $3 per kilogram, and material B costs $5 pe [#permalink]
23 Apr 2011, 02:20

kamalkicks wrote:

if it says item k consist of A and B i hope it means it consists of a and b only otherwise so many GMAT would have answer as E

this question will too simple to answer if assume what you are saying

AM i correct

My intention is not to debunk this question as many agree with the OA to be "B", making your interpretation correct . But it would definitely be less ambiguous if the author mentioned the fact explicitly, at least for me.

I consider all of the three statements correct: Sulphuric Acid, H_2SO_4, consists hydrogen and sulphur. Water, H_2O, consists only hydrogen and oxygen. Water, H_2O, consists hydrogen and oxygen. _________________

Re: Material A costs $3 per kilogram, and material B costs $5 pe [#permalink]
16 Feb 2012, 07:08

tejal777 wrote:

Ohh!! People this is why I bow down to this forum...Thank you..!

Tejal: Please don't get bow down.

The answere is E.

Take 1st statement:

X= 5.1 and Y= 4.9, here X>Y X= 5 and Y=5 X=Y X=4 and Y= 6 X<Y

Hence 1 is not sufficient

Take Statement 2: 3X+4Y< 40

Lets take X=6 and Y=4 total cost = 34<40

Take x= 4 and Y= 6 Total Cost= 38<40

Cannot determined x and y,henec not sufficient

Combine both:

Y=5,X=5 3X+4Y= 33<40

Y= 4.1 X= 5.9 3X+4Y= 34.1 <40

Not sufficient.

Some of my friends have argued that there is nothing mentioned like mixture consists of only A and B. This factor would add further uncertainity. Hence E is the best answere according to me.

Re: Material A costs $3 per kilogram, and material B costs $5 pe [#permalink]
16 Feb 2012, 08:45

Expert's post

jaymin1986 wrote:

tejal777 wrote:

Ohh!! People this is why I bow down to this forum...Thank you..!

Tejal: Please don't get bow down.

The answere is E.

Take 1st statement:

X= 5.1 and Y= 4.9, here X>Y X= 5 and Y=5 X=Y X=4 and Y= 6 X<Y

Hence 1 is not sufficient

Take Statement 2: 3X+4Y< 40

Lets take X=6 and Y=4 total cost = 34<40

Take x= 4 and Y= 6 Total Cost= 38<40

Cannot determined x and y,henec not sufficient

Combine both:

Y=5,X=5 3X+4Y= 33<40

Y= 4.1 X= 5.9 3X+4Y= 34.1 <40

Not sufficient.

Some of my friends have argued that there is nothing mentioned like mixture consists of only A and B. This factor would add further uncertainity. Hence E is the best answere according to me.