three of four numbers have a sum of 22. if the average of the four number is 8, what is the four number
a + b + c = 22
(a + b + c + d)/4 = 8
so
a + b + c + d = 32
so
d = 32 - 22
or
d = 10
(a + b + c + d)/4 = 8
so
a + b + c + d = 32
so
d = 32 - 22
or
d = 10