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There are approx 2.2 pounds in 1 kg. To the nearest

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There are approx 2.2 pounds in 1 kg. To the nearest [#permalink] New post 30 Oct 2005, 15:33
There are approx 2.2 pounds in 1 kg. To the nearest eighteenth, how many eighteenths of kilogram is in one pound?

A. 7
B. 8
C. 9
D. 39
E. 40
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 [#permalink] New post 30 Oct 2005, 21:10
x/18=1/2.2
so 8 and some other stuff less than .5
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 [#permalink] New post 15 Oct 2006, 09:49
It may sound a bit stupid, but I cannot solve this one:

form me eighteenth of 1 kg= 0,18 kg.

2,2 pound in 1 kg=> in one pound there is 0,45 kg.

How many eigtheenths are in 0,45 = 0,45/0,18 =2,3.

So x approximately = 2!

What is an eighteenth??

:?
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 [#permalink] New post 15 Oct 2006, 10:14
thearch is right.

Look at this this way.

If there are 22/10Ibs in 1kg. Conversely, there are 10/22kg in 1 pound.

Now here's the magic. An eighteenth is 1/18, but everyone seemed to know that. So, how many of these can we pick out of 10/22kg.

Simple, like how many 5's can you pick out of 10.
The answer is 10/22 divided by 1/18

You get 10/22 x 18/1 = 8.181818

B for me too.
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 [#permalink] New post 15 Oct 2006, 11:35
:oops: I forgot that heighteens was 1/18...

Thanks Rayn.
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Re: Conversion from Kaplan [#permalink] New post 16 Oct 2006, 03:38
in 1 pound ,there are 10/22 kg...

let there be n eighteens....so n*1/18 = 10/22

n=8.18..

choice b
Re: Conversion from Kaplan   [#permalink] 16 Oct 2006, 03:38
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There are approx 2.2 pounds in 1 kg. To the nearest

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