Question

The average of 6, 10, X, 20 and 30 is 18. What is the value of x?​

Answer 1

Answer:

(6+10+X+20+30)÷5=18

66+X=18×5

X=90-66

=24

Answer 2

Answer:

x= 24

Step-by-step explanation:

$\frac{6 + 10 + x + 20 + 30}{5} = 18 \\ \frac{66 + x}{5} = 18 \\ 66 + x = 18 \times 5 \\ x = 90 - 66 \\ x = 24$