If mean monthly expense for six different item is $442. the mean expense of five of them is 460.how much the value of sixth item
The total expense of the six items is "442\\times6=2652"
The total expense of the five items is "460\\times5=2300"
The difference of the total expense for six and five item is the value of the sixth item.
So,
the value of the sixth item is "2652-2300=352".
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