the sum of the ages of 4 children born at the intervals of 3 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 + 3 , x + 6 , x + 9 we know that the sum of their ages is 36 so , x + ( x + 3 ) + ( x + 6 ) + ( x + 9 ) = 36 therefore the youngest child is 4.5 years old answer : c"
divide(subtract(divide(36, divide(4, 3)), multiply(subtract(4, const_1), 3)), 3)