Question

If the arthmetic mean of 27,23,x-4,x+4,15,3 and 7 is 15 then the value of x​

Answer 1

Answer:

Arithmetic mean of the given numbers is 13, so

7

27+23+x−4+x+4+15+3+7

=13

7

75+2x

=13

75+2x=91

2x=16⇒x=8

Value of the x is 8

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