The sum of A and B is 120, and the ratio of A and B is 2:3. What is A's number?
甲、乙两数的和是120，甲、乙两数的比是2：3，甲数是多少．
<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">120 / 5</gadget>
<output>24</output>

<gadget id="calculator">24 * 2</gadget>
<output>48</output>

<result>48</result>