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

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BTGmoderatorLU: Moderator; Posts: 2575; Joined: Sun Oct 15, 2017 1:50 pmFollowed by: 6 members

by BTGmoderatorLU » Mon Feb 08, 2021 12:30 pm

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Source: Official Guide

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

The OA is D

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Source: Beat The GMAT — Problem Solving | Mon Feb 08, 2021 12:30 pm

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Scott@TargetTestPrep: GMAT Instructor; Posts: 8175; Joined: Sat Apr 25, 2015 10:56 amFollowed by: 29 members; Location: Los Angeles, CA; Thanked: 43 times

Re: 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

by Scott@TargetTestPrep » Thu Feb 18, 2021 10:43 am

BTGmoderatorLU wrote: ↑
Mon Feb 08, 2021 12:30 pm
Source: Official Guide

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

The OA is D

Solution:

We can let r = 0 and s = 4. So p = 2 and t = 1. Therefore,

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

Answer: D

Scott Woodbury-Stewart
Founder and CEO
[email protected]

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