the sum of three consecutive numbers is 87 . the greatest among these three numbers is :
"sol . let the numbers be x , x + 1 and x + 2 . then , x + ( x + 1 ) + ( x + 2 ) = 87 ⇔ 3 x = 84 ⇔ x = 28 . greatest number = ( x + 2 ) = 30 . answer d"
divide(add(87, const_1), const_2)