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In one day, Juan sends Keith three times as many messages as
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31 May 2017, 07:06
31 May 2017, 07:06
Expert Reply
00:00
Question Stats:
85% (02:01) correct
14% (01:41) wrong based on 14 sessions
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In one day, Juan sends Keith three times as many messages as he sends Laurence, and Laurence sends Missy 4.5 times as many messages as he receives from Juan. If Missy received 18 messages from Laurence, how many messages does Keith receive from Juan?
A. 3
B. 12
C. 16
D. 18
E. 56
A. 3
B. 12
C. 16
D. 18
E. 56
Drill 1
Question: 8
Page: 342
Question: 8
Page: 342
Re: In one day, Juan sends Keith three times as many messages as
[#permalink]
04 Jun 2017, 15:41
04 Jun 2017, 15:41
Expert Reply
Explanation
It’s an algebra question with numbers for answer choices, so set up your scratch paper to plug in the answers.
The answers represent the number of messages Keith receives from Juan, so label them K, or something similar, and give yourself columns for L, which is K ÷ 3, and M, which is 4.5 × L.
Start with choice (C). If K = 16, then L is a fraction; since you can send a fractional message, eliminate choice (C)—and go ahead and eliminate choice (E), since it’s also not divisible by 3. Next, try choice (B), since it’s the middle of the remaining 3 answer choices. If
K = 12, then L = 4 and M = 18. That’s the correct number of messages for Missy, so choice B is correct.
It’s an algebra question with numbers for answer choices, so set up your scratch paper to plug in the answers.
The answers represent the number of messages Keith receives from Juan, so label them K, or something similar, and give yourself columns for L, which is K ÷ 3, and M, which is 4.5 × L.
Start with choice (C). If K = 16, then L is a fraction; since you can send a fractional message, eliminate choice (C)—and go ahead and eliminate choice (E), since it’s also not divisible by 3. Next, try choice (B), since it’s the middle of the remaining 3 answer choices. If
K = 12, then L = 4 and M = 18. That’s the correct number of messages for Missy, so choice B is correct.
gmatclubot
Re: In one day, Juan sends Keith three times as many messages as [#permalink]
04 Jun 2017, 15:41
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