Problem 753

46. At 8:00 AM, Xiao Zhang departs from location A to location B at a speed of 60 kilometers per hour. At 9:00 AM, Xiao Wang departs from location B to location A. After reaching location B, Xiao Zhang immediately returns along the same route and both arrive at location A exactly at 12:00 PM. How far from location A did the two meet? $\qquad$ kilometers.