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If Amy drove the distance from her home to the beach in less than 2 ho

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If Amy drove the distance from her home to the beach in less than 2 ho  [#permalink]

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New post 14 Feb 2019, 02:38
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Question Stats:

71% (01:12) correct 29% (01:14) wrong based on 24 sessions

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If Amy drove the distance from her home to the beach in less than 2 hours, was her average speed greater than 60 miles per hour?

(1) The distance that Amy drove from her home to the beach was less than 125 miles.
(2) The distance that Amy drove from her home to the beach was greater than 122 miles.

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Re: If Amy drove the distance from her home to the beach in less than 2 ho  [#permalink]

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New post 14 Feb 2019, 06:24
1
From S1;

Distance is less than 125 miles.
Time is less than 2 hours.
If the distance is 50 miles, imagine he drove at 50mph, then speed is not greater than 60mph.
If the distance is 80 miles, imagine he drove at 70mph, he still takes less than 2 hours. and speed is more than 60mph.
Hence S1 is insufficient.

From S2:

Distance is more than 122 miles and time is less than 2 hours, then speed has to be more than 61mph. Hence S2 is sufficient.

B is the answer.
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Re: If Amy drove the distance from her home to the beach in less than 2 ho  [#permalink]

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New post 15 Feb 2019, 05:37
SajjadAhmad wrote:
If Amy drove the distance from her home to the beach in less than 2 hours, was her average speed greater than 60 miles per hour?

(1) The distance that Amy drove from her home to the beach was less than 125 miles.
(2) The distance that Amy drove from her home to the beach was greater than 122 miles.



#1
d <125
now if we take speed to be 61
then D 124 miles; t would be >2 hrs and D 122miles; t =2 hrs and D<122 miles ; t <2 hrs
in sufficient

#2
d >122 miles so at speed 61 mph ; t >2 hrs ;
so amy took >2 hrs to reach beach ..
IMO B
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Re: If Amy drove the distance from her home to the beach in less than 2 ho   [#permalink] 15 Feb 2019, 05:37
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If Amy drove the distance from her home to the beach in less than 2 ho

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