if a takes x days to do a work then b takes 2 x days to do the same work then with in how many day ' s a will alone complete this work ?
1 / x + 1 / 2 x = 1 / 18 = > 3 / 2 x = 1 / 18 = > x = 27 days . hence , a alone can finish the work in 27 days . answer : a
add(subtract(multiply(multiply(const_3, const_3), multiply(2, const_2)), add(multiply(const_3, const_3), multiply(2, const_2))), multiply(2, const_2))