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# The contents of a box conists of 14 apples and 23 oranges.

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Intern
Joined: 08 Jan 2007
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The contents of a box conists of 14 apples and 23 oranges. [#permalink]  16 Feb 2007, 17:28
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The contents of a box conists of 14 apples and 23 oranges. How many oranges must be removed from the box so that 70% of the fruit will be apples?

A 3
B 6
C 14
D 17
E 20

??
Manager
Joined: 12 Sep 2006
Posts: 83
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Kudos [?]: 4 [0], given: 0

Intern
Joined: 08 Jan 2007
Posts: 42
Followers: 1

Kudos [?]: 1 [0], given: 0

its 17, but now sure how
Manager
Joined: 12 Sep 2006
Posts: 83
Followers: 1

Kudos [?]: 4 [0], given: 0

Hey, i correct myself.
Heres how i did it (not sure if its the correct technique)

Let x oranges are removed from the basket. The resultant should be 70 % apples

(37-x)*70/100=14
upon calculating for x, we get 17
Senior Manager
Joined: 12 Mar 2006
Posts: 367
Schools: Kellogg School of Management
Followers: 2

Kudos [?]: 36 [0], given: 3

let n oranges be removed

14/(14+23-n) = 0.7

25.9 - 0.7n = 14

0.7n = 11.9

n = 17

so D
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