# The average of 6,10,x,20 and 30 is 18. what is the value of x​

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

### 0 thoughts on “The average of 6,10,x,20 and 30 is 18. what is the value of x​”

1. thanhha

$$x = 24$$

Step-by-step explanation:

$$6 + 10 + x + 20 + 30 = 18$$

There are 5 numbers that we must add to average out to get 18 so let set this equation up

$$\frac{6 + 10 + x + 20 + 30}{5} = 18$$

$$6 + 10 + x + 20 + 30 = 90$$

$$x = 24$$

24

Step-by-step explanation:

18 times 5 is 90 so that means that the given numbers have to add up to 90 (including x)

so,

6+10+20+30=66

90-66=24

I hope this helps!
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