Two engineering teams worked together to build a 200-kilometer highway, each working from one end to the other, and completed the task in 50 days. Team A repairs 2.5 kilometers per day on average, how many kilometers does Team B repair on average per day? (solution by equation)
两个工程队共同修一条200千米的公路，各从一端相向施工，50天就完成了任务．甲队平均每天修2.5千米，乙队平均每天修多少千米？(用方程解)
<gadget id="calculator">2.5 * 50</gadget>
<output>125</output>

<gadget id="calculator">200 - 125</gadget>
<output>75</output>

<gadget id="calculator">75 / 50</gadget>
<output>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>