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Updated on: 05 Jul 2013, 04:23
Originally posted by antoxavier on 05 Jul 2013, 04:19.
Last edited by Bunuel on 05 Jul 2013, 04:23, edited 1 time in total.
Last edited by Bunuel on 05 Jul 2013, 04:23, edited 1 time in total.
EDITED THE QUESTION.
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B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
90% (01:45) correct
10%
(02:27)
wrong
based on 59
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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
05 Jul 2013, 04:27
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antoxavier
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
Juan --> Laurence = x messages;
Juan --> Keith = 3x messages (Juan sends Keith three times as many messages as he sends Laurence);
Laurence --> Missy = 4.5x =18 (Laurence sends Missy 4.5 times as many messages as he receives from Juan).
4.5x =18 --> x = 4 --> 3x = 12.
Answer: B.
05 Jul 2013, 07:38
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Bunuel's solution is, as always, completely correct. But for those of us who can get intimidated by this type of question, just break it down into parts.
The only concrete number you're given is 18, which is how many messages Missy received. After that, just go through the steps to solve for the other variables.
18 is 4.5 times what Laurence sends to Missy. This means Laurence sends her 4 texts.
Juan sends out 3 times that many, so that's 4 x 3 = 12.
Voila.
-Ron
The only concrete number you're given is 18, which is how many messages Missy received. After that, just go through the steps to solve for the other variables.
18 is 4.5 times what Laurence sends to Missy. This means Laurence sends her 4 texts.
Juan sends out 3 times that many, so that's 4 x 3 = 12.
Voila.
-Ron
