The average age of five people A, B, C, D, and X is 26 years old, and the age of these five people is not younger than 20 years old. So, the oldest of these five people is no more than how old.
甲、乙、丙、丁、卯五人的平均年龄是26岁，且这五个人的年龄都不小于20岁．那么，这五人中年龄最大的不超过多少岁．
<gadget id="calculator">26 * 5</gadget>
<output>130</output>

<gadget id="calculator">20 * 4</gadget>
<output>80</output>

<gadget id="calculator">130 - 80</gadget>
<output>50</output>

<result>50</result>