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Chan and Mieko drove separate cars along the entire length of a certai

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Chan and Mieko drove separate cars along the entire length of a certai [#permalink]

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New post 15 May 2017, 01:08
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Difficulty:

  25% (medium)

Question Stats:

73% (00:44) correct 27% (00:37) wrong based on 79 sessions

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Chan and Mieko drove separate cars along the entire length of a certain route. If Chan made the trip in 15 minutes, how many minutes did it take Mieko to make the same trip?
(1) Mieko’s average speed for the trip was 3/4 of Chan’s average speed.
(2) The route is 14 miles long.
[Reveal] Spoiler: OA

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Re: Chan and Mieko drove separate cars along the entire length of a certai [#permalink]

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New post 15 May 2017, 01:17
Statement 1st- Chan's speed : Mieko's speed = 4:3 and for same distance speed is inversely proportional to time => c's time : m's time =3:4 and 3-> 15 minutes that implies 4 part represents 20 minutes and hence sufficient.
Statement 2nd is clearly insufficient -> OPTION A
Re: Chan and Mieko drove separate cars along the entire length of a certai   [#permalink] 15 May 2017, 01:17
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Chan and Mieko drove separate cars along the entire length of a certai

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