4.8 is the average.
the answer of the average of 42, 57, and 63 is 54.
It is: 47+52+63+66 = 228/4 => 57 which is the average mean
63
21. The number subtracted doubles in each succession... 63 is 3 less than 66... 57 is 6 less than 63... 45 is 12 less than 57. So 21 is 24 less than 45.
63
the answer of the average of 42, 57, and 63 is 54.
It is: 47+52+63+66 = 228/4 => 57 which is the average mean
-57 + 63 = 6
63
21. The number subtracted doubles in each succession... 63 is 3 less than 66... 57 is 6 less than 63... 45 is 12 less than 57. So 21 is 24 less than 45.
one.
It is: (63+57)/2 = 60
The Least Common Multiple (LCM) of 63 and 57 is 1,197.
63
19 + 24 + 20 = 63/3 = 21 The average of the three numbers is 21.
(57 x 63) + 28 = 3619
57 x 63 + 28 = 3619