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Boris ran the first 12 miles of a 24-mile race in 1.8 hours. If his ra

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Boris ran the first 12 miles of a 24-mile race in 1.8 hours. If his ra  [#permalink]

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New post 18 Jan 2019, 01:16
1
1
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

78% (01:59) correct 22% (02:10) wrong based on 41 sessions

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Re: Boris ran the first 12 miles of a 24-mile race in 1.8 hours. If his ra  [#permalink]

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New post 18 Jan 2019, 01:42
2
Average speed = total distance travelled/ total time taken

Let x = time for last 12 km

6=24/1.8+x

x = 2.2 hours

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Re: Boris ran the first 12 miles of a 24-mile race in 1.8 hours. If his ra  [#permalink]

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New post 22 Jan 2019, 15:38
Hi, I think the answers are slightly off. I rechecked my work twice because I didn't see my result in the answer choices. Please modify? Thanks so much.
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Re: Boris ran the first 12 miles of a 24-mile race in 1.8 hours. If his ra  [#permalink]

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New post 19 Feb 2019, 03:05
Bunuel wrote:
Boris ran the first 12 miles of a 24-mile race in 1.8 hours. If his rate for the entire race was 6 miles per hour, how many hours did it take him to run the last 12 miles?

A 53
B 95
C 2
D 4
E 6


Dear Moderator,
It seems the correct choice is missing from the answers. Correct answer is 2.2. Hope you will do the needful. Thank you.
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- Stne
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Re: Boris ran the first 12 miles of a 24-mile race in 1.8 hours. If his ra   [#permalink] 19 Feb 2019, 03:05
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Boris ran the first 12 miles of a 24-mile race in 1.8 hours. If his ra

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