a can do a piece of work in 6 days and b can do it in 6 days how long will they both work together to complete the work ?
"explanation : a ’ s one day work = 1 / 5 b ’ s one day work = 1 / 6 ( a + b ) ’ s one day work = 1 / 6 + 1 / 6 = 2 / 3 = = > time = 3 / 2 = 1 1 / 2 days answer : option b"
divide(const_1, add(divide(const_1, 6), divide(const_1, 6)))