Question

The average of two numbers is 16. If one of the numbers is 11, what is the other number?

Answer 1

Answer:

21

Step-by-step explanation:

For average of 2 numbers, you add them up and divide by two, so that means when you add them up, the sum should be 16*2=32, so one of the numbers is 11, so to find the other number subtract 11 from the sum, 32, 32-11=21

Answer 2

Answer:

X = 21

Step-by-step explanation:

So we know one of the numbers is 11, so in order to get the average of 16, there needs to be a number that when added to 11 and divided by 2 gets you to 16. So let's put that into an equation. :)

16 =  (11 + x) /2

We have to get x alone so we need to multiply the 2 to the left side.

32 = 11 + x

Now, to get x alone we have to subtract 11 from both sides.

X = 21