The sum of ages of 5 children born 3 years different each is 60 yrs. What is the age of the Elder child?	Pick:
A) 17 B) 19 C) 16 D) 18 E) 21
Let the ages of children be x, (x + 3), (x + 6), (x + 9) and (x + 12) years.   Then, x + (x + 3) + (x + 6) + (x + 9) + (x + 12) = 60   5x = 30   x = 6.   x+12= 6+12= 
<gadget id="calculator">6+12</gadget>
<output>18</output>
18   18
<result>D</result>
The sum of ages of 5 children born 3 years different each is 60 yrs. What is the age of the Elder child?