the sum of the ages of 4 children born at the intervals of 5 years each is 58 years . what is the age of the youngest child ?
"explanation : let x = the youngest child . each of the other four children will then be x + 5 , x + 10 , x + 15 we know that the sum of their ages is 58 . so , x + ( x + 5 ) + ( x + 10 ) + ( x + 15 ) = 58 x = 7 the youngest child is 4 years old . answer : a"
divide(subtract(divide(58, divide(4, 5)), multiply(subtract(4, const_1), 5)), 5)