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20 Jun 2021, 00:45
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
70% (01:10) correct
30%
(00:59)
wrong
based on 423
sessions
History
Date
Time
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Not Attempted Yet
It takes Amy between 6 and 7 minutes to grill a steak, and she can only grill one steak at a time. She does not need to take breaks between steaks. Can Amy finish grilling all the steaks needed for her party before her guests arrive?
(1) Amy needs to grill four steaks for her party.
(2) Amy's guests will arrive in 25 to 30 minutes.
Came across this slightly modified version of the question - in MGMAT itself
Very similar to:
https://gmatclub.com/forum/it-takes-amy ... l#p1445204
(1) Amy needs to grill four steaks for her party.
(2) Amy's guests will arrive in 25 to 30 minutes.
Came across this slightly modified version of the question - in MGMAT itself
Very similar to:
https://gmatclub.com/forum/it-takes-amy ... l#p1445204
20 Jun 2021, 08:09
Kudos
Bookmarks
sm1510
This question doesn't seem fair to me, because it's not clear what it means. Does Amy take some certain fixed amount of time to grill each steak that we're not being told, that is somewhere between 6 minutes and 7 minutes? If so, the answer is E, because if she takes very close to 7 minutes to grill each of 4 steaks, she might take nearly 28 minutes, and if her guests arrive early, say in 26 minutes, she won't finish on time.
But I wouldn't interpret the question that way. If I learn "it takes Amy between 6 and 7 minutes to grill a steak," I'd read that to mean "Amy takes between 6 and 7 minutes to cook a steak, depending on how rare or well-done she wants it". Under that interpretation, if Amy's sole goal is to cook everything on time, she can just cook the 4 steaks each in 6 minutes (or just slightly longer than 6 minutes), and can finish cooking before the guests arrive, and the answer is C.
If the "OA" is E here, they obviously intend the first interpretation above, but the second seems much more natural to me, because we all know a cook can freely decide, within limits, how long to cook things. If they really wanted test takers to interpret the question in the first way, they shouldn't have used cooking in the question setup. They could instead have said something like "a machine packs boxes at a constant rate, and packs one box in between 6 and 7 minutes" and proceeded from there. Then since the machine is working at some constant rate, we know its time per box is some fixed unknown between 6 and 7 minutes, and the machine isn't free to choose how long it takes to pack a box.
20 Jun 2021, 13:16
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sm1510
Statement 1:
It takes between 6 and 7 min to grill one steak, then it would take between 6*4 = 24 and 7*4 = 28 for four steaks. We don't know how long it takes for her guests to arrive so we cannot know if she can finish in time. Insufficient.
Statement 2:
We don't know how long it takes to grill the steaks, insufficient.
Combined:
If it takes 7 min to grill a steak and the guests arrive in 25~28 min, then she will not finish in time. If it takes 6 min to grill a steak then she will always finish in time. Insufficient.
Ans: E
