The sum of ages of 5 children born at the intervals of 8 years each is 90 years. What is the age of the youngest child? Choose the correct choice from the following choices:
A) 2
B) 9
C) 6
D) 4
E) 0

Rationale: "let the ages of children be x , ( x + 8 ) , ( x + 16 ) , ( x + 24 ) and ( x + 32 ) years . then , x + ( x + 8 ) + ( x + 16 ) + ( x + 24 ) + ( x + 32 ) = 90 5 x = 10 x = 2 . age of the youngest child = x = 2 years . answer : a"
Answer: A