The average of 5 numbers is 6x. If four of them are x, 7, 6, 4, then find the fifth number. Give your answer in terms of x.
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Average=(x+7+6+4+x₅)/5
6x=(x+17+x₅)/5
30x=x+17+x₅
x₅=30x-x-17
=29x-17(Ans.)
6x=(x+17+x₅)/5
30x=x+17+x₅
x₅=30x-x-17
=29x-17(Ans.)
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