Math Is Fun Forum

MathsBlur

Guest

Help me - Blur

If 1.587 = Level 100 (Highest) and 1.457 at Level 1 (Lowest),  what is the Level for 1.512 ?

Pls provide me with the calculation formulae.  Thanks.

JaneFairfax

Member

Registered: 2007-02-23

Posts: 6,868

Re: Help me - Blur

∴ 1.512 is between Level 42 and Level 43.

ZHero

Real Member

Registered: 2008-06-08

Posts: 1,889

Re: Help me - Blur

I differ in my calculations..
1.587-1.457=0.130
so we have 130 parts which are divided into 100 levels..
So 1part=10/13level
now required part =1.512-1.457=0.055
so, its the 56th part!
Required level=56*10/13=43.07...

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If two or more thoughts intersect, there has to be a point!

MathsBlur

Member

Registered: 2008-08-09

Posts: 1

Re: Help me - Blur

Appreciate your sharing.  Look like is not an easy question.  No proper formulae to calculate the correct answer.

Last edited by MathsBlur (2008-08-09 21:29:31)

JaneFairfax

Member

Registered: 2007-02-23

Posts: 6,868

Re: Help me - Blur

so we have 130 parts which are divided into 100 levels..

No! You don’t divide by the number of levels. You divide by the number of intervals between levels. 100 levels = 99 intervals.

Last edited by JaneFairfax (2008-08-10 10:21:35)

ZHero

Real Member

Registered: 2008-06-08

Posts: 1,889

Re: Help me - Blur

Thanks Jane! You're right again!
However, it took me a whole day to UNDERSTAND HOW!?
You're Cho Chweet!!

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If two or more thoughts intersect, there has to be a point!

John E. Franklin

Member

Registered: 2005-08-29

Posts: 3,588

Re: Help me - Blur

Jane's method is correct
even if the lev1&100 #'s are
not in the middle of the
ranges.  Because the
computed points will be
somewhere in the 2..99
ranges.   
You will always have 2
possible answers since
we don't know the
exact boundaries, but you
will have a definite
answer if you are on
one of the computed
points.

Last edited by John E. Franklin (2008-08-11 04:24:56)

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igloo myrtilles fourmis

MooseofDoom

Member

Registered: 2008-08-10

Posts: 13

Re: Help me - Blur

Woah...

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MathsBlur

Member

Registered: 2008-08-09

Posts: 1

Re: Help me - Blur

Thanks, JaneFairfax and everyone

I have understood.  The formulae is (Mid-Value - Lowest Value) /((Highest Value-Lowest Value)/(100-1)) + 1