Mom bought 15 kilograms of rice and 25 kilograms of flour, and the total cost was 52.5 yuan, 1.2 yuan per kilogram of flour, how much is it per kilogram of rice? (answer in two ways)
妈妈买15千克大米和25千克面粉，一共用去了52.5元，每千克面粉1.2元，每千克大米多少元？(用两种方法解答)
<gadget id="calculator">1.2 * 25</gadget>
<output>30</output>

<gadget id="calculator">52.5 - 30</gadget>
<output>22.5</output>

<gadget id="calculator">22.5 / 15</gadget>
<output>1.5</output>

<result>1.5</result>