A, B, and C are running a 100-meter race. When A reaches the finish line, B is still 20 meters away from the finish line, and C is still 40 meters away from the finish line. If the speed of the three races remains the same, when B reaches the finish line, C How many meters away from the end.
甲、乙、丙三人进行100米赛跑，当甲到达终点时，乙距离终点还有20米，丙距离终点还有40米，如果三人赛跑的速度不变，当乙到达终点时，丙距离终点还有多少米米．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">100 * (3/4)</gadget>
<output>75</output>

<gadget id="calculator">100 - 75</gadget>
<output>25</output>

<result>25</result>