GMAT Test M15 Master Thread - All discussions

Question

Discussion of Questions in GMAT Test M15

tarun · Answer

Should not the answer be B.

x^2 - y^2 = (x+y)(x-y)

Statement 2 says that x+y is divisible by 8. In that case (x+y)(x-y) is also divisible by 8.

tarun · Answer

IMHO, the wordings "company's monthly sales" is not very clear. May be the test maker can make it more clear by using the term "revenue" or something else.

Praetorian · Answer

I thought it was OK. What else would a company's monthly sales mean? profits? costs?

sandhyash · Answer

Is there an error in Q.19 ?

How can the closest vertex near (0,0) be (1,1) whereas it has been clearly mentioned in the question that (6,2) is the one of the vertices of the diagonal. Hence the straight line will have (0,2) as the other vertex. The distance of (0,2) from (0,0) will be 2.

AN225 · Answer

Ok, the trick is: the number is divisible by X if after division there is integer left and no remainder.

In this question, answer 2 precludes the situation when x=7.77, y = 0.23, so
(x+y)(x-y)/8 = integer*7,52
thus we need answer 1 and answer 2 to make sure that after division by 8 we'll end up with multiplying two integers.

bblast · Answer

Dude, (0,2) makes it a rectangle instead of square. Q#19 coordinate-plane-90772.html

GMAT Test M15 Master Thread - All discussions

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