A truck and a bus are traveling towards each other at the same time from two places 135 kilometers apart. After 1.5 hours, they meet. It is known that the speed ratio of the truck and the bus is 7:8. How many kilometers does the bus travel per hour?
一辆货车和一辆客车同时从相距135千米的两地相向而行，经过1.5小时相遇，已知货车和客车速度的比是7：8，客车每小时行多少千米？
<gadget id="calculator">135 / 1.5</gadget>
<output>90</output>

<gadget id="calculator">7 + 8</gadget>
<output>15</output>

<gadget id="calculator">8 / 15</gadget>
<output>8/15 = around 0.533333</output>

<gadget id="calculator">90 * (8/15)</gadget>
<output>48</output>

<result>48</result>