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Re: Official guide question [#permalink]
01 Mar 2011, 12:19
This post received KUDOS
The contents of a certain box consist of 14 apples and 23 oranges. How many oranges must be removed from the box so that 70 percent of the pieces of fruit in the box will be apples? (a)3 (b)6 (c)14 (d)17 (e)20
Please help me with this one. I'm unable to understand the technique used in the OG. Thanks
As only oranges must be removed then 14 apples which are now in the box must comprise 70% of total # of fruits after removal: 0.7*total=14 --> total=20, and as there are 37 fruits now 37-20=17 oranges must be removed.
Re: The contents of a certain box consist of 14 apples and 23 or [#permalink]
19 Dec 2014, 03:34
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