28. Two cyclists A and B start from the same place at the same time, one going towards north at 18km/hr and other going towards south at 20 km/hr. What time will they take to be 95 km apart?

29. X an Y are two stations 500 km apart. A train starts form X and moves towards Y at 20 km/hr. Another rain starts from Y at the same time and moves towards X at 30 km/hr. How far from X will they cross each other: