if a , b and c together can finish a piece of work in 4 days . a alone in 12 days and b in 24 days , then c alone can do it in ?
c = 1 / 4 - 1 / 12 – 1 / 24 = 1 / 8 = > 8 days ' answer : c
divide(const_1, subtract(subtract(const_0_25, divide(const_1, 12)), divide(const_1, 24)))