Question

ry Short Answer Type Questions
6. The mean of 6, 6+2 x, 5 and 8 + 3x is 20. Find the value of x.​

Answer 1

$20 = (6 + 6 + 2x + 5 + 8 + 3x) \div 4 \\ 20 \times 4 = 25 + 5x \\ 80 - 25 = 5x \\ 55 \div 5 = x \\ x = 11$