A, B, and C each buy several kilograms of apples together with the same amount of money. When distributing apples, both A and C took 7.5 kilograms more apples than B. In this way, A and C should each give B 6 yuan, how many yuan per kilogram of apples.
甲乙丙三人各拿同样多的钱合买苹果若干千克．分苹果时，甲和丙都比乙多拿了7.5千克苹果，这样，甲和丙各应给乙6元钱，每千克苹果多少元．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">7.5 * (2/3)</gadget>
<output>5</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">6 * (2/5)</gadget>
<output>12/5 = around 2.4</output>

<result>12/5 = around 2.4</result>