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?
Choose the most appropriate option:  A) 30  B) 20  C) 10  D) 5  E) 15
Let present age of the elder person =x and   present age of the younger person =x−16   (x−6)=3(x−16−6)⇒x−6=3x−66⇒2x=60⇒x=602=30   30nswer is 30.
<result>A</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?