Divide a batch of bonuses between A and B, and each person can get 10 yuan on average. If it is only distributed to group A, each person can get 15 yuan on average. If it is only distributed to group B, how much yuan can each person get on average? ．
把一批奖金分给甲、乙两个组，平均每人可得10元，如果只分给甲组，平均每人可得15元，如果只分给乙组，平均每人可得多少元．
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 / 15</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">(1/10) - (1/15)</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">1 / (1/30)</gadget>
<output>30</output>

<result>30</result>