Question

Find x if the mean of the numbers 6, 7,x, 2 is 4.

answer sincerely.,otherwise i will report to you ☺​

Answer 1

Answer:

Given : -

Numbers are : 6, 7x, 2

Mean of number = 4

$\sf \: mean \: = 4$

$\implies \sf \: \frac{6 + 7x + 2}{3} = 4$

$\implies \sf \: \frac{8+ 7x }{3} = 4$

$\implies \sf \: 8+ 7x = 12$

$\implies \sf \: 7x = 12 - 8$

$\implies \sf \: 7x = 4$

$\implies \sf \: x = \frac{4}{7}$