In one day, Juan sends Keith two times as many messages as he sends Laurence, and Laurence sends Missy 8 times as many messages as he receives from Juan. If Missy received 40 messages from Laurence, how many messages does Keith receive from Juan?
Choose the most appropriate option:
A) 10
B) 12
C) 16
D) 18
E) 56
Juan --&gt; Laurence = x messages;   Juan --&gt; Keith = 2x messages (Juan sends Keith two times as many messages as he sends Laurence);   Laurence --&gt; Missy = 8x =40 (Laurence sends Missy 8 times as many messages as he receives from Juan).   8x =40 --&gt; x = 5 --&gt; 2x = 10.   10nswer: 10.
<result>A</result>
In one day, Juan sends Keith two times as many messages as he sends Laurence, and Laurence sends Missy 8 times as many messages as he receives from Juan. If Missy received 40 messages from Laurence, how many messages does Keith receive from Juan?