Mom bought 15 kilograms of rice and 10 kilograms of flour in the supermarket, and the total cost was 61 yuan. Knowing that the price per kilogram of flour is 3.40 yuan, how much is the price per kilogram of rice?
妈妈在超市买了15千克大米和10千克面粉，一共用去61元．已知每千克面粉的价钱是3.40元，每千克大米的价钱是多少元？
<gadget id="calculator">10 * 3.4</gadget>
<output>34</output>

<gadget id="calculator">61 - 34</gadget>
<output>27</output>

<gadget id="calculator">27 / 15</gadget>
<output>9/5 = around 1.8</output>

<result>9/5 = around 1.8</result>