The sum of the two numbers A and B is 60, and the decimal point of the number B is moved one place to the left, which is equal to half of the number A. What is the number B?
甲、乙两个数的和是60，乙数的小数点向左移动一位后等于甲数的一半，乙数是多少．
<gadget id="calculator">1 + 5</gadget>
<output>6</output>

<gadget id="calculator">60 / 6</gadget>
<output>10</output>

<gadget id="calculator">5 * 10</gadget>
<output>50</output>

<result>50</result>