Aunt Wang bought 12 kilograms of rice and a bottle of peanut oil, paying a total of 102 yuan. A bottle of peanut oil is 48 yuan, how much is it per kilogram of rice? (solution by equation)
王阿姨买了12千克大米与一瓶花生油，一共付出102元．一瓶花生油48元，每千克大米多少钱？(用方程解)
<gadget id="calculator">102 - 48</gadget>
<output>54</output>

<gadget id="calculator">54 / 12</gadget>
<output>9/2 = around 4.5</output>

<result>9/2 = around 4.5</result>