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# A foot race had 36 teams of a dozen runners each. By noon

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A foot race had 36 teams of a dozen runners each. By noon  [#permalink]

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09 Apr 2017, 18:31
00:00

Difficulty:

15% (low)

Question Stats:

89% (01:25) correct 11% (02:36) wrong based on 41 sessions

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A foot race had 36 teams of a dozen runners each. By noon, $$\frac{4}{9}$$ of the teams had finished the race, and 70 percent of the remaining teams finished the race by one o' clock. How many teams had not finished the race by one o' clock?

A. 1
B. 2
C. 4
D. 6
E. 8

Source: GMAT Free

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Re: A foot race had 36 teams of a dozen runners each. By noon  [#permalink]

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09 Apr 2017, 19:18
nguyendinhtuong wrote:
A foot race had 36 teams of a dozen runners each. By noon, $$\frac{4}{9}$$ of the teams had finished the race, and 70 percent of the remaining teams finished the race by one o' clock. How many teams had not finished the race by one o' clock?

A. 1
B. 2
C. 4
D. 6
E. 8

Source: GMAT Free

36 teams of a dozen runners This is a small trap where Number of runners in a team does not matter.

Rest of it is simple fraction

5/9 * 3/10 * 36

5/9 == ( Team that did not finish by noon as a fraction 1 - 4/9)

3/10 ==( Remaining team after 70% of 5/9 finished by 1)

Re: A foot race had 36 teams of a dozen runners each. By noon &nbs [#permalink] 09 Apr 2017, 19:18
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# A foot race had 36 teams of a dozen runners each. By noon

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