One of the numbers increased by 10. How did the average of the two numbers change?

Pls tell me the answer thats all i neeed

2 answers

current average: (x+y)/2
so, suppose y increases by 10. Then
new average: (x+ y+10)/2 = (x+y)/2 + 10/2
so, what do you think?
yes, please think, do not just ask for answers.
e.g. suppose your two numbers were 20 and 60
then their average is 40

now add 10 to one of them, what is your new number?

try it with 2 other numbers of your own