Mom carries 60 yuan. She first spent 48 yuan to buy 10 kilograms of rice, and the rest of the money to buy sweet potatoes at 2.4 yuan per kilogram. How many kilograms of sweet potatoes can mom buy?
妈妈身带60元．她先花48元买了10千克大米，剩下的钱买地瓜，每千克地瓜2.4元．妈妈还可以买多少千克地瓜？
<gadget id="calculator">60 - 48</gadget>
<output>12</output>

<gadget id="calculator">12 / 2.4</gadget>
<output>5</output>

<result>5</result>