There are currently 5 staff members in an office. After 3 years, some workers will retire (among them, one male and one female. According to the national regulations, men should retire at the age of 60 and women at the age of 55), and at the same time, 3 workers will be transferred in (the average age is 30 years old). , then the average age of the whole room will be 10 years younger than it is now. What is the average age of the whole room now?
某办公室现有5名工作人员，3年后有工人退休(其中男、女各一人，按国家规定男60岁、女55岁当退休)，同时又调进3人(其平均年龄30岁)，那时全室人员的平均年龄会比现在小10岁．现在全室平均年龄多少岁？
<gadget id="calculator">3 * 5</gadget>
<output>15</output>

<gadget id="calculator">30 * 3</gadget>
<output>90</output>

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

<gadget id="calculator">60 - 60 - 55</gadget>
<output>-55</output>

<gadget id="calculator">15 + 90 + (-55)</gadget>
<output>50</output>

<gadget id="calculator">6 - 5</gadget>
<output>1</output>

<gadget id="calculator">50 / 1</gadget>
<output>50</output>

<result>50</result>