rits700

one more GMAT trap.....:hmm:

Q1) imo A each shirt costs $15 each sweater costs $25 avg given as $21 => 15x + 25y = 21(x+y) => 3x=2y clearly the number of sweaters sold(y) is greater than the number of shirts sold(x). SUFFICIENT stmt2: the total price for shirts and sweaters = $420 => 15x + 25y = 420 => x & y can be (23, 3) OR (8, 12) so number of sweaters sold can be greater OR less than the number of shirts sold. INSUFFICIENT. Q2). refer this Q4) imo D x & y are +ve integers, is xy even? stmt1: 5x-4y even since 4y is even for any integer value of y, 5x has to be even, since given that 5x-4y even. => 5x is even => x even => xy is even. SUFFICIENT stmt2: 6x+7y is even since 6x is even for any integer value of x, 7y has to be even, since given that 5x-4y even. => 7y is even => y is even => xy is even. SUFFICIENT

imo A. statement-I alone is sufficient to reach to the answer. mean of 10 one digit numbers is 8.8 => sum total is 88. in order the sum total of 10 one digit numbers to 88, there has to be at the least eight 9s and others 2 can be 8s e.g., the series can be 8,8,9,9,9,9,9,9,9 OR 7,9,9,9,9,9,9,9,9 can u think of any other set of numbers - I think NO. so in any case the median will be 9. and this is what the Q is asking. SUFFICIENT.

T-REX, Gaurav, How do you justify the usage of past perfect tense in chocie B?? In 1981 children in the United States spent an average of slightly less than two and a half hours a week doing household chores; by 1997 that figure had grown to nearly six hours a week. it doesn't seem to be a GMAT type Q, but given the choices, D is the lesser evil as most of us agreed....

if u square both sides, everything gets cancelled out. so it gives nothing. so A is INSUFFICIENT Hence as explained by arjmen, ans shd be E

M+W=1400 (equation-I) 42% of 1400 = 36% of M + 50% of W. (equation-II)

I think the prediction happened much before the economy growth. so past perfect is natural choice.

one more vote for B

B makes sense.

how it results in different values as sum?

imo E. both the choices essentially gives the same info in a different way and it is not SUFFICIENT

we are comparing "mathematics" with "a creative activity". It certainly is not a NOUN comparison. when we compare "mathematics" with "activity" - it is NOUN comparison geekybiz1, you could be right. I think the second reason sounds great. I buy that.

A it is. discussed many times in the past. 3y^2+7y=x =>y(3y+7)=x since given that x & y are integers, hence x is multiple of y. SUFFICIENT

thnx. OA is A. it's a kinda tricky Q. tempting to go for C.

thnx GMAT-HELP for the explanation. The answer indeed is E.