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can anyone help??

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swapna.rajanish7
 Post subject: can anyone help??
 Post Posted: Wed Mar 03, 2010 9:48 pm 
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Course Students


Posts: 13
A laboratory has 55 rabbits,some white and the rest brown. Which of the following could be the ratio of white rabbits to brown rabbits in the lab??
1:3
3:8
5:11
3:4
5:1

ans b..can some one explain??
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abhisec
 Post subject: Re: can anyone help??
 Post Posted: Wed Mar 03, 2010 10:41 pm 
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Posts: 5
since total is 55, it should be evenly divisible by the ratio,

assume x is the multiplier again.

a ) x + 3x = 55..........gives x = 55/4 not an integer, not possible.
b ) 3x + 8x = 55.....gives x = 55/11 = 5.........possible is the right answer.
...
...
...

you can compute for rest if you want but since b gave you an answer, i will stop.
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Ben Ku
 Post subject: Re: can anyone help??
 Post Posted: Tue Mar 16, 2010 2:59 am 
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ManhattanGMAT Staff


Posts: 824
Please cite the source (author) of this problem. We cannot reply unless a source is cited (and, if no source is cited, we will have to delete the post!). Thanks.

_________________
Ben Ku
Instructor
ManhattanGMAT
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