Two cars, A and B, drive from two places 225 kilometers apart at the same time. After 2.5 hours, they meet each other. Car A travels 48 kilometers per hour. How many kilometers per hour does your own car travel? (Solution of column equation)
甲、乙两辆汽车同时从相距225千米的两地相对开出，经过2.5小时相遇，甲车每小时行48千米，己车每小时行多少千米？(列方程解)
<gadget id="calculator">48 * 2.5</gadget>
<output>120</output>

<gadget id="calculator">225 - 120</gadget>
<output>105</output>

<gadget id="calculator">105 / 2.5</gadget>
<output>42</output>

<result>42</result>