30 students from Class 3 (1) go rowing in the park. Each small boat can accommodate 4 people, and the rent is 8 yuan; each big boat can accommodate 6 people, and the rent is 10 yuan. How much is the minimum cost to rent a boat?
三(一)班30名同学去公园划船，每条小船坐4人，租金8元；每条大船坐6人，租金10元，如果每条船都坐满，可以怎样租船？最少要用多少钱来租船？
<gadget id="calculator">30 / 6</gadget>
<output>5</output>

<gadget id="calculator">5 * 10</gadget>
<output>50</output>

<result>50</result>