Emergency at sea. You are at sea in your motorboat at a point A located 40 km from a point...

Emergency at sea. You are at sea in your motorboat at a point A located 40 km from a point B that lies 130 kilometers from a hospital on a long, straight road. (See the accompanying figure.) While at point A, your companion feels sick and has to be taken to the hospital. You call the hospital on your cell phone to send an ambulance. Your motorboat can travel at 40 kilometers per hour, and the ambulance can travel at 80 kilometers per hour. How far from point B will you be when you and the ambulance arrive simultaneously at point C?