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In 2007, there were 300 juniors and 200 seniors at a high school. In 2

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Math Expert
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V
Joined: 02 Sep 2009
Posts: 58434
In 2007, there were 300 juniors and 200 seniors at a high school. In 2  [#permalink]

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New post 22 Jan 2019, 02:29
1
1
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

78% (01:45) correct 22% (02:27) wrong based on 28 sessions

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GMAT Club Legend
GMAT Club Legend
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D
Joined: 18 Aug 2017
Posts: 5022
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE: Marketing (Energy and Utilities)
GMAT ToolKit User Premium Member
Re: In 2007, there were 300 juniors and 200 seniors at a high school. In 2  [#permalink]

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New post 22 Jan 2019, 05:37
Bunuel wrote:
In 2007, there were 300 juniors and 200 seniors at a high school. In 2008, there were 400 juniors and 250 seniors at the same high school. What was the approximate percent increase in the ratio of juniors to seniors from 2007 to 2008?


A 6.5%

B 6.66%

C 24%

D 25%

E 30%



2007 ratio : 300/200 ; 3/2
2008 ratio = 400/250' 40/25 ; 8/5

solve 8/5-3/2 / 3/2

we get 6.66 IMO B
GMAT Club Bot
Re: In 2007, there were 300 juniors and 200 seniors at a high school. In 2   [#permalink] 22 Jan 2019, 05:37
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In 2007, there were 300 juniors and 200 seniors at a high school. In 2

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