The distance between the two places is 120.6 kilometers. Two people, A and B, ride bicycles and walk toward each other from the two places at the same time. After 3 hours, they have not met and are still 30.3 kilometers apart. A travels 15.7 kilometers per hour, how many kilometers per hour does B travel?
两地相距120.6千米，甲乙两人骑自行车同时从两地相向而行，3小时后两人未相遇还相距30.3千米．甲每小时行15.7千米，乙车每小时行多少千米？
<gadget id="calculator">120.6 - 30.3</gadget>
<output>90.3</output>

<gadget id="calculator">90.3 / 3</gadget>
<output>30.1</output>

<gadget id="calculator">30.1 - 15.7</gadget>
<output>14.4</output>

<result>14.4</result>