According to me, the answer is A
What is the value of x?
(1) When x is multiplied by 8, the result is between 50 and 60.
(2) When x is doubled, the result is between 10 and 15.
OA: E
Thanx in advance...[/spoiler]
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1000 DS Sec-4, Q-11
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Plz explain...
According to me, the answer is A
What is the value of x?
(1) When x is multiplied by 8, the result is between 50 and 60.
(2) When x is doubled, the result is between 10 and 15.
OA: E
Thanx in advance...[/spoiler]
According to me, the answer is A
What is the value of x?
(1) When x is multiplied by 8, the result is between 50 and 60.
(2) When x is doubled, the result is between 10 and 15.
OA: E
Thanx in advance...[/spoiler]
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P_mashru
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question ask about value of X, without any specification (non zero, +ve, -ve, fraction)
1) is suff only if x is given as positive integer but same condition is not given. not suff
2) is not suff even if x is given as positive integer b'se of ambiguity, weather x=6 or 7. not suff
combining 1) & 2) is not suff b'se 1) says 6 & 7 while 1) wants 8
Answer E
1) is suff only if x is given as positive integer but same condition is not given. not suff
2) is not suff even if x is given as positive integer b'se of ambiguity, weather x=6 or 7. not suff
combining 1) & 2) is not suff b'se 1) says 6 & 7 while 1) wants 8
Answer E
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If you answered A, I'm sure you fell into one of the more common traps in Data Sufficiency- you assumed x was a positive integer. Unless you're told that, you cannot assume that. From 1), all we know is that:akg_gmat wrote:Plz explain...
According to me, the answer is A
What is the value of x?
(1) When x is multiplied by 8, the result is between 50 and 60.
(2) When x is doubled, the result is between 10 and 15.
OA: E
Thanx in advance...[/spoiler]
50 < 8x < 60
50/8 < x < 60/8
6.25 < x < 7.5
So x might be 6.88, or x might be 7. Insufficient.
From 2), all we know is that
10 < 2x < 15
5 < x < 7.5
Together, we still only know that 6.25 < x < 7.5. So the answer is E.
For online GMAT math tutoring, or to buy my higher-level Quant books and problem sets, contact me at ianstewartgmat at gmail.com
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