A is 10 yuan more than B. If 20% of A is given to B, then the two people's money is equal. How much is A original?
甲比乙多10元．如果把甲的20%给乙，那么两个人的钱就相等．甲原有多少元．
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/5) * 2</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">10 / (2/5)</gadget>
<output>25</output>

<result>25</result>