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On the number line, if r<s, if p is halfway between r and s,

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On the number line, if r<s, if p is halfway between r and s,  [#permalink]

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New post Updated on: 17 Feb 2011, 09:59
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On the number line, if r<s, if p is halfway between r and s, and if t is halfway between p and r then (s-t)/(t-r)=

A. 1/4
B. 1/3
C. 4/3
D. 3
E. 4

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Originally posted by Baten80 on 17 Feb 2011, 08:54.
Last edited by Baten80 on 17 Feb 2011, 09:59, edited 1 time in total.
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Re: Alegebra expression  [#permalink]

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New post 17 Feb 2011, 09:29
1
1
Baten80 wrote:
On the number line, if r<S, if p is the halfway between r and s, and if t is the halfway between p and r, then s-t/t-r=

What i will the s-t either s minus t or s to t. please help.
1/4
1/3
4/3
3
4


PLEASE FORMAT THE QUESTIONS PROPERLY!

Also what do you mean by "What i will the s-t either s minus t or s to t"?

Original question is:

On the number line, if r<s, if p is halfway between r and s, and if t is halfway between p and r then (s-t)/(t-r)=
A. 1/4
B. 1/3
C. 4/3
D. 3
E. 4

Let r=0 and s=4 --> p is halfway between r and s: p=2;
t is halfway between p=2 and r=0: t=1;

(s-t)/(t-r)=(4-1)/(1-0)=3.

Answer: D.

P.S. On the GMAT we can often see such statement: \(k\) is halfway between \(m\) and \(n\) on the number line. Remember this statement can ALWAYS be expressed algebraically as: \(\frac{m+n}{2}=k\).
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Re: Alegebra expression  [#permalink]

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New post 17 Feb 2011, 10:01
What i will READ the s-t either s minus t or s to t. please help.
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100 GMAT PREP Quantitative collection http://gmatclub.com/forum/gmat-prep-problem-collections-114358.html
Collections of work/rate problems with solutions http://gmatclub.com/forum/collections-of-work-rate-problem-with-solutions-118919.html
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Re: Alegebra expression  [#permalink]

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New post 17 Feb 2011, 10:05
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Re: On the number line, if r<s, if p is halfway between r and s,  [#permalink]

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New post 18 Mar 2018, 03:01
Bunuel wrote:
Baten80 wrote:
On the number line, if r<S, if p is the halfway between r and s, and if t is the halfway between p and r, then s-t/t-r=

What i will the s-t either s minus t or s to t. please help.
1/4
1/3
4/3
3
4


PLEASE FORMAT THE QUESTIONS PROPERLY!

Also what do you mean by "What i will the s-t either s minus t or s to t"?

Original question is:

On the number line, if r<s, if p is halfway between r and s, and if t is halfway between p and r then (s-t)/(t-r)=
A. 1/4
B. 1/3
C. 4/3
D. 3
E. 4

Let r=0 and s=4 --> p is halfway between r and s: p=2;
t is halfway between p=2 and r=0: t=1;

(s-t)/(t-r)=(4-1)/(1-0)=3.

Answer: D.

P.S. On the GMAT we can often see such statement: \(k\) is halfway between \(m\) and \(n\) on the number line. Remember this statement can ALWAYS be expressed algebraically as: \(\frac{m+n}{2}=k\).



niks18 hi there :)

i took following numbers R=2, S=5, T=3, P =4 whats wrong with my reasoning ? :? im free to choose any numbers as long as p is the halfway between r and s, and if t is the halfway between p and r. No ? :? :)

thanks & have a great weekend :)
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Re: On the number line, if r<s, if p is halfway between r and s,  [#permalink]

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New post 18 Mar 2018, 03:50
1
dave13 wrote:
Bunuel wrote:
Baten80 wrote:
On the number line, if r<S, if p is the halfway between r and s, and if t is the halfway between p and r, then s-t/t-r=

What i will the s-t either s minus t or s to t. please help.
1/4
1/3
4/3
3
4


PLEASE FORMAT THE QUESTIONS PROPERLY!

Also what do you mean by "What i will the s-t either s minus t or s to t"?

Original question is:

On the number line, if r<s, if p is halfway between r and s, and if t is halfway between p and r then (s-t)/(t-r)=
A. 1/4
B. 1/3
C. 4/3
D. 3
E. 4

Let r=0 and s=4 --> p is halfway between r and s: p=2;
t is halfway between p=2 and r=0: t=1;

(s-t)/(t-r)=(4-1)/(1-0)=3.

Answer: D.

P.S. On the GMAT we can often see such statement: \(k\) is halfway between \(m\) and \(n\) on the number line. Remember this statement can ALWAYS be expressed algebraically as: \(\frac{m+n}{2}=k\).



niks18 hi there :)

i took following numbers R=2, S=5, T=3, P =4 whats wrong with my reasoning ? :? im free to choose any numbers as long as p is the halfway between r and s, and if t is the halfway between p and r. No ? :? :)

thanks & have a great weekend :)


Hi dave13

Before I answer your question, what according to you is "halfway"? how do you define "halfway" and as per that definition what will be the "halfway" of 2 & 5
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Re: On the number line, if r<s, if p is halfway between r and s,  [#permalink]

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New post 18 Mar 2018, 04:59
1
dave13 wrote:
i took following numbers R=2, S=5, T=3, P =4 whats wrong with my reasoning ? :? im free to choose any numbers as long as p is the halfway between r and s, and if t is the halfway between p and r. No ? :? :)

thanks & have a great weekend :)


Hey dave13 ,

Halfway means middle of the two numbers.

So, If the distance between you and I is 1000 Kms, then the halfway between us will be 500 Kms away from both of us.

Does that make sense?
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Re: On the number line, if r<s, if p is halfway between r and s, &nbs [#permalink] 18 Mar 2018, 04:59
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