If a*b*c=130, b*c*d = 65, c*d*e=1000 and d*e*f=150 the (a*f)/(c*d) = ?
Choices
A) 1/2
B) 1/4
C) 3/4
D) 1/3
E) None of these
Explanation :   aâˆ—bâˆ—c/bâˆ—câˆ—d= 130/65 =&gt; a/d = 2   dâˆ—eâˆ—f/câˆ—dâˆ—e= 150/1000 =&gt; f/c = 1/4   a/d* f/c = 2 * 15/10 = 1/3   Answer : 1/3
<result>D</result>
If a*b*c=130, b*c*d = 65, c*d*e=1000 and d*e*f=150 the (a*f)/(c*d) = ?