Glen and Hannah drive at constant speeds toward each other on a highway. Glen drives at a constant speed of 37 km per hour. At a certain time they pass by each other, and then keep driving away from each other, maintaining their constant speeds. If Glen is 130 km away from Hannah at 6 am, and also 130 km away from Hannah at 11 am, then how fast is Hannah driving (in kilometers per hour)?
Choose the correct choice from the following.
A) 12  B) 13  C) 14  D) 15  E) 16
Glen and Hannah complete 260 km / 5 hours = 52 km/hour   Hannah's speed is  52-37= 
<gadget id="calculator"> 52-37</gadget>
<output>15</output>
15 km/hour   The answer is 15.
<result>D</result>
Glen and Hannah drive at constant speeds toward each other on a highway. Glen drives at a constant speed of 37 km per hour. At a certain time they pass by each other, and then keep driving away from each other, maintaining their constant speeds. If Glen is 130 km away from Hannah at 6 am, and also 130 km away from Hannah at 11 am, then how fast is Hannah driving (in kilometers per hour)?