the sum of ages of 5 children born 1.5 years different each is 50 years . what is the age of the elder child ?
"let the ages of children be x , ( x + 1.5 ) , ( x + 3 ) , ( x + 4.5 ) and ( x + 6 ) years . then , x + ( x + 1.5 ) + ( x + 3 ) + ( x + 4.5 ) + ( x + 6 ) = 50 5 x = 35 x = 7 . x + 6 = 7 + 6 = 13 answer : e"
divide(add(add(add(add(1.5, const_4), add(1.5, const_4)), add(const_4, const_4)), 50), 5)