Two motorcycles, M and N, start from points 480 km apart. They travel at constant speeds. If they move towards each other, they meet in 5 hours. If they move in the same direction, they meet in 15 hours. What is the speed of motorcycle M? (Assume M is the faster motorcycle)

उत्तर देखें और व्याख्या

उत्तर: (B) 64 km/h

व्याख्या

Sum of speeds = 480/5 = 96 and difference = 480/15 = 32, so M = 64 km/h.