Mom bought 20 kilograms of rice and 15 kilograms of flour, and they shared 85 yuan. It is known that rice is 2.6 yuan per kilogram. How much is flour per kilogram?
妈妈买回大米20千克，面粉15千克，共用去85元，已知大米每千克2.6元，面粉每千克多少元？
<gadget id="calculator">2.6 * 20</gadget>
<output>52</output>

<gadget id="calculator">85 - 52</gadget>
<output>33</output>

<gadget id="calculator">33 / 15</gadget>
<output>11/5 = around 2.2</output>

<result>11/5 = around 2.2</result>