# Question: Range of Variable Expressions

## Comment on Range of Variable Expressions

### this problem belongs to

this problem belongs to magoosh but why you upload here? IT"S not fair

### I can assure you that I'm the

I can assure you that I'm the creator and copyright owner of this video.

If you have any doubts, you can contact Magoosh about it.

Cheers,
Brent

### Now, why would you have to

Now, why would you have to multiply again by 2 after we eliminated 2 from the second to last step?

### Earlier in the question, we

Earlier in the question, we concluded that the range = 2x + 2y

So, once we know that x+y = 20, we must multiply both sides by 2 to get: 2x + 2y = 40

Does that help?

Cheers,
Brent

### Hi,

Hi,
Plz let me know if I can put values:

As the median is : x + y = 20
let x = 1 and y = 19 , 0 < x < y or 0 < 1 < 19

Now x - y = -18

and 3x + y = 22

The range from -18 to +22 = 41

Thanks

### Perfect!

Perfect!
Once we know that the median = 10, we can just plug in values for x and y to determine the range.
Cheers,
Brent