A group of hikers is to travel xkm by bus at an average speed of 48km/hr to an unknown destination. They then plan to walk back along the same route at an average speed of 4.8km/hr and to arrive back 24hrs after setting out in the bus. If they allow 2hrs for lunch and rest, how far must the bus take them?

If you can help to solve this problem, it would be greatly appreciated

P.S Please show all your workings

Thanks xoxo