The sum of the ages of A and B this year is 43 years old. After 4 years, A is 3 years older than B. How old is A this year?
甲、乙两人今年的年龄和是43岁，4年后，甲比乙大3岁，甲今年多少岁．
<gadget id="calculator">43 + 3</gadget>
<output>46</output>

<gadget id="calculator">46 / 2</gadget>
<output>23</output>

<result>23</result>