Kamal was 4 times as old as his son 8 years ago. After 8 years, Kamal will be twice as old as his son. Find out the present age of Kamal.	Pick.
A) 30
B) 35
C) 40
D) 45
E) 50
Let age of the son before 8 years =x   Then, age of Kamal before 8 years ago =4x   After 8 years, Kamal will be twice as old as his son   ⇒4x+16=2(x+16)⇒x=8   Present age of Kamal   =4x+8=4×8+8=40   Answer is 40.
<result>C</result>
Kamal was 4 times as old as his son 8 years ago. After 8 years, Kamal will be twice as old as his son. Find out the present age of Kamal.