Question

what is the average of 45 , 34 , 23 , 89 ,20

Answer 1

average=(45+34+23+89+20)/5
=211/5
=42.5

Answer 2

$sum=45+34+23+89+20$
$= 201$
$201 div 20 = 10.05$
so the average is 10.05.
I hope it helps you.