If a*b*c=130, b*c*d = 65, c*d*e=1000 and d*e*f=250 the (a*f)/(c*d) = ? Choose the correct choice from the following answers
A) 1/2
B) 1/4
C) 3/4
D) 2/3
E) None of these
Explanation :   a∗b∗c/b∗c∗d= 130/65 =&gt; a/d = 2   d∗e∗f/c∗d∗e= 250/1000 =&gt; f/c = 14   a/d* f/c = 2 * 1/4 = 1/2   1/2nswer : 1/2
<result>A</result>
If a*b*c=130, b*c*d = 65, c*d*e=1000 and d*e*f=250 the (a*f)/(c*d) = ?