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Tom, Dorothy, and Sammy went on a vacation and agreed to split the cos

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Tom, Dorothy, and Sammy went on a vacation and agreed to split the cos  [#permalink]

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New post 20 Mar 2019, 04:19
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A
B
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E

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  15% (low)

Question Stats:

100% (01:52) correct 0% (00:00) wrong based on 7 sessions

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Tom, Dorothy, and Sammy went on a vacation and agreed to split the costs evenly. During their trip Tom paid $105, Dorothy paid $125, and Sammy paid $175. In order to share the costs equally, Tom gave Sammy t dollars, and Dorothy gave Sammy d dollars. What is t − d ?

(A) 15

(B) 20

(C) 25

(D) 30

(E) 35

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Manager
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Joined: 19 Jan 2019
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Tom, Dorothy, and Sammy went on a vacation and agreed to split the cos  [#permalink]

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New post 20 Mar 2019, 04:35
Tom paid $105
Dorothy paid $125
Sammy paid $175...

In order to share the cost of the vacation evenly, all the three must contribute equal amounts i.e (105+125+175)/3 = $135

Tom has to pay Sammy "t" (135-105) = $30
Dorothy has to pay Sammy "d" (135-125) = $10
t - d = $20

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Re: Tom, Dorothy, and Sammy went on a vacation and agreed to split the cos  [#permalink]

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New post 20 Mar 2019, 05:40
IMO B.

avrage cost = 135
tommy to Sammy = 30
dorothy to sammy = 10

so difference = 30-10 = 20

IMO B

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Re: Tom, Dorothy, and Sammy went on a vacation and agreed to split the cos   [#permalink] 20 Mar 2019, 05:40
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Tom, Dorothy, and Sammy went on a vacation and agreed to split the cos

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