In physical education class, Xiao Pang stood at the starting point of the 100-meter runway, and Xiao Ya stood 10 meters in front of him. It is known that Xiaoya runs an average of 3 meters per second, how many meters does Xiaopang run on average per second?
体育课上，小胖站在百米跑道的起点处，小亚站在他前面10米处，两人同时同向起跑，5秒后小胖追上小亚．已知小亚平均每秒跑3米，小胖平均每秒跑多少米？
<gadget id="calculator">3 * 5</gadget>
<output>15</output>

<gadget id="calculator">10 + 15</gadget>
<output>25</output>

<gadget id="calculator">25 / 5</gadget>
<output>5</output>

<result>5</result>