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17 Jul 2011, 14:07
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
95%
(hard)
Question Stats:
56% (03:09) correct
44%
(03:22)
wrong
based on 227
sessions
History
Date
Time
Result
Not Attempted Yet
Before the regime change, the National Museum regularly displayed only one third of the artifacts in its collection; the other two thirds were kept in storage. The National Museum’s curator estimates that one seventh to one fifth of the artifacts in the museum’s collection disappeared during the regime change. If the National Museum now wishes to display the same number of artifacts as it did before the regime change, and if none of the missing artifacts are recovered, then the museum will keep in storage:
1) \(4/5\) to \(6/7\) of artifacts in collection
2) \(9/14\) to \(13/20\)
3) \(3/5\) to \(5/7\)
4) \(7/12\) to \(11/18\)
5) \(7/18\) to \(5/12\)
1) \(4/5\) to \(6/7\) of artifacts in collection
2) \(9/14\) to \(13/20\)
3) \(3/5\) to \(5/7\)
4) \(7/12\) to \(11/18\)
5) \(7/18\) to \(5/12\)
17 Jul 2011, 14:14
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I do not think that OA is spot on. Here's why it could be.
Total no of artifacts= 105 (3*5*7)
Stolen= 15 to 21 (1/7 to 1/5)
Remain = 84 to 90
keep in storage= 56 to 60
this equals 8/12 to 2/3. Can someone explain pls?
Total no of artifacts= 105 (3*5*7)
Stolen= 15 to 21 (1/7 to 1/5)
Remain = 84 to 90
keep in storage= 56 to 60
this equals 8/12 to 2/3. Can someone explain pls?
17 Jul 2011, 14:20
Kudos
Bookmarks
Chetangupta
84 -> 90 is correct.
Requirement is: Museum wants to display the number of artifacts that it did before. Before, it displayed 35 i.e. 1/3*105
Now too:
35
If 21 were stolen
84-35=49
49/84-> store
If 15 stolen:
Total=90
Display=35
Store=90-35=55
55/90->Store
