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Is This Right? mathematical question

#1 User is offline   cherylwong 

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Posted 15 June 2007 - 04:07 AM

ok...
this is confusing! REAL confusing! anyone can let me know whether is this right or wrong?
here it goes..

4:5 = 80%
4:5 = 4/5 = 80%
4:5 = 80%

so, is 4:5 = 80%?
can anyone tell me this?
at first i disagree that 4:5 = 80% but now, i am confused..
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#2 User is offline   wonny 

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Posted 15 June 2007 - 04:14 AM

no it is wrong

4:5 means 4parts to 5parts. therefore 9 (4+5) parts all together

and 4:5 DOES NOT equal to 4/5
that is

4 parts to 5 parts DOES NOT equal to 4 parts OF 5

one thing is right though, 4/5 does equal 80%

so therefore this statement is WRONG 4:5 = 80%
4:5 = 4/5 = 80%<< the bold bit is incorrect (man i repeat a lot. but hopefully you get the point)


who told you this anyway??? +_______+

[EDIT]
just viewed your profile...your 18? O___O


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#3 User is offline   SereneKrn 

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Posted 15 June 2007 - 05:11 AM

QUOTE(wonny @ Jun 15 2007, 07:14 AM) View Post
no it is wrong

4:5 means 4parts to 5parts. therefore 9 (4+5) parts all together

and 4:5 DOES NOT equal to 4/5
that is

4 parts to 5 parts DOES NOT equal to 4 parts OF 5

one thing is right though, 4/5 does equal 80%

so therefore this statement is WRONG 4:5 = 80%
4:5 = 4/5 = 80%<< the bold bit is incorrect (man i repeat a lot. but hopefully you get the point)
who told you this anyway??? +_______+

[EDIT]
just viewed your profile...your 18? O___O


Although 4:5 in betting terms is 80% return on the dollar...
However 4:5 is a ratio and not a percent.
Example
There are 72 apples and 90 oranges, that is a 4:5 ratio.
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