Andy and Chris are running a race. Andy is faster than Chris, so he gave Chris a 32 m lead in a 252 m race. However, Andy lost by 12 m. What lead should Andy give so that they both finish together?
Andy and Sandy can run at a speed of 40 cm/s and 50 cm/s respectively. They start their race at 9:00 am. Considering that they are travelling at a uniform speed in the same direction, find the distance between them at 9:20 am.