Xiaoli and Xiaoyong walk toward each other from two places 2360 meters apart at the same time. Xiaoyong walks 100 meters per minute, Xiaoli walks 80 meters per minute. When they met, Xiaoli walked 960 meters. How much later did Xiaoli start than Xiaoyong? minute?
小丽和小勇同时从相距2360米的两地相向而行，小勇每分钟走100米，小丽每分钟走80米，相遇时小丽走了960米，小丽比小勇晚出发多少分钟？
<gadget id="calculator">1_600 / 100</gadget>
<output>16</output>

<gadget id="calculator">960 / 80</gadget>
<output>12</output>

<gadget id="calculator">16 - 12</gadget>
<output>4</output>

<result>4</result>