The sum of the ages of 5 children born at the intervals of 3 year each is 50 year. what is the age of the eldest child ?  Pick one:
A) 16 year
B) 8 year
C) 10 year
D) None of these
E) 9 year
Solution   let the ages of the children be x,(x + 3),(x + 6),(x + 9) and (x + 12) year.   then, x + (x + 3) + (x + 6) + (x + 9) + (x + 12) = 50 â‡” 5 x = 20 â‡” x= 4.   âˆ´ Age of the eldest child = x+12 = 4 +12= 
<gadget id="calculator">4 +12</gadget>
<output>16</output>
16 years. 16 yearnswer 16 year
<result>A</result>
The sum of the ages of 5 children born at the intervals of 3 year each is 50 year. what is the age of the eldest child ?