If a*b*c=130, b*c*d = 65, c*d*e=500 and d*e*f=250 the (a*f)/(c*d) = ?
Choose one.
A) 1/2 B) 1/4 C) 3/4 D) 2/3 E) 1
1xplanation :   aâˆ—bâˆ—c/bâˆ—câˆ—d= 130/65 =&gt; a/d = 2   dâˆ—eâˆ—f/câˆ—dâˆ—e= 250/500 =&gt; f/c = 1/2   a/d* f/c = 2 * 1/2= 
<gadget id="calculator">2 * 1/2</gadget>
<output>1</output>
1   Answer : 1
<result>E</result>
If a*b*c=130, b*c*d = 65, c*d*e=500 and d*e*f=250 the (a*f)/(c*d) = ?