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problem on ratios

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Director
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problem on ratios [#permalink]

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New post 18 Jul 2009, 01:48
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A fruit mixture is made up by 25% fruit A and 75% fruit B. Now if the amount of fruit A is doubled, what is their relative share in the new mixture?
Guys I got confused mid way.Does somebdy have an easy explanation?
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http://gmatclub.com/forum/countdown-beginshas-ended-85483-40.html#p649902

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Re: problem on ratios [#permalink]

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New post 18 Jul 2009, 08:27
If you pick numbers, this solution may be very easy.

Let´s assume that the mixture has 100 ml.

Thus
A = 25ml
B = 75ml

If you double A, now it is 50ml.

The total mixture has now 125ml, because you have add 25ml of fruit A.

The relative share of A now is [50][/125] = 0.4 = 40%
the remaining is 60% of B.

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Re: problem on ratios [#permalink]

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New post 21 Jul 2009, 21:21
Yeah, choosing a number will make it fairly easy to solve.

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Re: problem on ratios   [#permalink] 21 Jul 2009, 21:21
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