If a/b = 5/2, b/c = 1/2, c/d = 1, d/e = 3/2 and e/f = 4/3, then what is the value of abc/def ?
Select:
A) 15/8 B) 14/3 C) 41/7 D) 3/18 E) 18/4
Say a = 2. Then:   a/b = 5/2 --&gt; b = 2/5;   b/c = 1/2 --&gt; c = 4/5;   c/d = 1 --&gt; d = 4/5;   d/e = 3/2 --&gt; e = 8/15;   e/f = 4/3 --&gt; f = 2/5.   abc/def = (1*2/5*4/5)/(4/5*8/15*2/5) = 15/8.   15/8nswer: 15/8.
<result>A</result>
If a/b = 5/2, b/c = 1/2, c/d = 1, d/e = 3/2 and e/f = 4/3, then what is the value of abc/def ?