the sum of the ages of 4 children born at the intervals of 4 years each is 36 years . what is the age of the youngest child ?
"let x = the youngest child . each of the other four children will then be x + 4 , x + 8 , x + 12 we know that the sum of their ages is 36 . so , x + ( x + 4 ) + ( x + 8 ) + ( x + 12 ) = 36 therefore the youngest child is 3 years old answer : a"
divide(subtract(divide(36, divide(4, 4)), multiply(subtract(4, const_1), 4)), 4)