A school organizes students to go on a spring outing in the countryside and rents a bus. The distance from the school to the campsite is 150 kilometers. The bus and a school car leave the school at the same time. When the car arrives at the campsite, the bus is still 30 kilometers away. It is known that the bus travels 60 kilometers per hour, how much faster is the car than the bus?
某学校组织学生去郊外春游，租用了一辆大客车，从学校到宿营地相距150千米．大客车和学校的一辆小汽车同时从学校出发，当小汽车到达宿营地时，大客车还有30千米．已知大客车每小时行60千米，则小汽车比大客车快多少千米？
<gadget id="calculator">150 - 30</gadget>
<output>120</output>

<gadget id="calculator">120 / 60</gadget>
<output>2</output>

<gadget id="calculator">150 / 2</gadget>
<output>75</output>

<gadget id="calculator">75 - 60</gadget>
<output>15</output>

<result>15</result>