The ages of two persons differ by 16 years. 6 years ago, the elder one was 3 times as old as the younger one. What are their present ages of the elder person  Pick one.
A) 15  B) 20  C) 25  D) 30  E) 28%
Explanation:   Let's take the present age of the elder person = x   and the present age of the younger person = x – 16   (x – 6) = 3 (x-16-6)   =&gt; x – 6 = 3x – 66   =&gt; 2x = 60   =&gt; x = 60/2= 
<gadget id="calculator">60/2</gadget>
<output>30</output>
30   Option 30
<result>D</result>
The ages of two persons differ by 16 years. 6 years ago, the elder one was 3 times as old as the younger one. What are their present ages of the elder person