Xiao Ming and Xiao Qiang go from A to B at the same time, their speed ratio is 4:3, Xiao Ming travels 20 kilometers per hour, how many kilometers does Xiao Qiang travel per hour?
小明和小强同时从甲地到乙地，他们的速度比是4：3，小明每小时行20千米，小强每小时行多少千米？
<gadget id="calculator">20 * 3</gadget>
<output>60</output>

<gadget id="calculator">60 / 4</gadget>
<output>15</output>

<result>15</result>