The sum of the ages of 4 children born at the intervals of 1 years each is 12 years. what is the age of the youngest child ?
Select the correct option
A) 2.5	B) 1.5	C) 1	D) 3.5	E) 4.5

Rationale: "let x = the youngest child . each of the other four children will then be x + 1 , x + 2 , x + 3 we know that the sum of their ages is 12 so , x + ( x + 1 ) + ( x + 2 ) + ( x + 3 ) = 12 therefore the youngest child is 1.5 years old answer : b"
Answer: B