60(40+80)/2 = 60
It is: 136
It is 2.65
65
90 exactly
60(40+80)/2 = 60
Halfway between 8 and 9
50 is exactly halfway between 40 and 60.
Exactly halfway between them is 10.15.
the number that comes exactly between 45 and 49 is 44 and half
11.65
17.625
9
It is: 45
55
4.825
It is: 136