If the average (arithmetic mean) of 10, 20, 30, 40, and x is 60, what is the val

游客2025-02-24 17

问题 If the average (arithmetic mean) of 10, 20, 30, 40, and x is 60, what is the value of x?

选项 A、50
B、60
C、100
D、150
E、200

答案 E

解析

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Iftheaverage(arithmeticmean)of10,20,30,40,andxis60,whatistheval