If going up a 60 feet multi storied by a lift is represented by positive integers then:
(i) How will we represented the height of flat at 60 feet above?
(ii) Represent the parking 15 feet below integer.
(iii) If lift goes upwards at the rate of 5 feet/ sec, represented as + 5 and if travels In a opposite direction, then what is the integer representing downward direction?