Three men start together to travel the same way around a circular track of 11 kilometres in circumference. Their speeds are 4, 5 1/2 and 8 kilometres per hour, respectively. When will they meet at the starting point?
There are 100 people on a line. Aviva is the 37th Person and Naomi is the 67th person. If a person on line is chosen at random, what is the probability that the person is standing between Aviva and Naomi ?