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On what day of the week did Mila go to Amsterdam?

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Joined: 26 Apr 2018
Posts: 39
On what day of the week did Mila go to Amsterdam?  [#permalink]

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New post 23 Sep 2018, 09:43
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Difficulty:

  55% (hard)

Question Stats:

53% (01:27) correct 48% (01:31) wrong based on 40 sessions

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On what day of the week did Mila go to Amsterdam?

1) She went exactly 35 hours before doing the groceries on Tueseday.

2) She went exactly 72 hours after having an appointment with the hairdresser on Friday.

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Posts: 6961
Re: On what day of the week did Mila go to Amsterdam?  [#permalink]

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New post 23 Sep 2018, 11:34
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On what day of the week did Mila go to Amsterdam?

1) She went exactly 35 hours before doing the groceries on Tueseday.
Day would depend on what TIME on Tuesday..
A. Say at 2300h on Tuesday, then 35 hours before would mean Monday.
B. Say at 0100 on Tuesday, then 35 hrs before would mean Sunday
Insufficient

2) She went exactly 72 hours after having an appointment with the hairdresser on Friday.
72 hrs mean exact 3 days..
So whatever the time on Friday, 3 days after that will be Monday
Sufficient

B
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1) Absolute modulus : http://gmatclub.com/forum/absolute-modulus-a-better-understanding-210849.html#p1622372
2)Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html
3) effects of arithmetic operations : https://gmatclub.com/forum/effects-of-arithmetic-operations-on-fractions-269413.html


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Re: On what day of the week did Mila go to Amsterdam? &nbs [#permalink] 23 Sep 2018, 11:34
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On what day of the week did Mila go to Amsterdam?

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