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Gmat Prep please help

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by sudhir3127 » Mon Aug 11, 2008 10:25 am
to convert metres/sec into kilometers/hr u shud multiply it by 18/5

there fore x meters = 18x/5 km= y

hope it helps.
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y in terms of x

by iplraf » Mon Aug 11, 2008 1:24 pm
x meters per second = y Km per hour = 1000y Km per hour 5/18 y meters per second

(use direct proportion to convert betwenn unities)

Therefore: y = 18/5 x
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by uncbeers » Mon Aug 11, 2008 1:52 pm
I am still not seeing where the 18/5 comes from. Can anyone explain a bit more?
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by parallel_chase » Mon Aug 11, 2008 1:55 pm
uncbeers wrote:I am still not seeing where the 18/5 comes from. Can anyone explain a bit more?
x = 1000y/(60*60)
x=5y/18
y=18x/5

Hope its clear.
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by uncbeers » Mon Aug 11, 2008 2:12 pm
parallel_chase wrote:
uncbeers wrote:I am still not seeing where the 18/5 comes from. Can anyone explain a bit more?
x = 1000y/(60*60)
x=5y/18
y=18x/5

Hope its clear.
Ugghh...bad Physics memories...thanks!
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