Three kinds of candies A, B, and C are priced at 10 yuan, 12 yuan, and 15 yuan per kilogram respectively. If these three kinds of candies are mixed into assorted candies, they will be priced at a 50% profit. If the same money is used to buy A , B, and C three kinds of candies, how much is the price per kilogram of assorted candies?
甲、乙、丙三种糖果，每千克价格分别为10元、12元、15元，若把这三种糖果混合成什锦糖，按50%的利润定价，若用了相同的钱购进甲、乙、丙三种糖果，则什锦糖每千克定价是多少元？
<gadget id="calculator">10 * 6</gadget>
<output>60</output>

<gadget id="calculator">12 * 5</gadget>
<output>60</output>

<gadget id="calculator">15 * 4</gadget>
<output>60</output>

<gadget id="calculator">60 + 60 + 60</gadget>
<output>180</output>

<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 + (1/2)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">6 + 5 + 4</gadget>
<output>15</output>

<gadget id="calculator">(3/2) / 15</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">180 * (1/10)</gadget>
<output>18</output>

<result>18</result>