【Question 13】  
City A and City B are 55 kilometers apart. Xiao Wang starts from City A to City B, first riding a bicycle for 25 kilometers, then switching to a bus, which travels at twice the speed. Upon arriving in City B, he finds that the time spent cycling is 1 hour more than the time spent on the bus. Xiao Wang's cycling speed is $\qquad$ kilometers/hour.