Cars A and B drive from two places 600 kilometers apart at the same time, and travel the entire distance (3/4) in 3 hours. Car B travels 50 kilometers per hour. How many kilometers per hour does Car A travel?
甲乙两车从相距600千米的两地同时相对开出，3小时行了全程的(3/4)，乙车每小时行50千米，甲车每小时行多少千米？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(3/4) / 3</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">600 * (1/4)</gadget>
<output>150</output>

<gadget id="calculator">150 - 50</gadget>
<output>100</output>

<result>100</result>