21 + 17 + 16 = 54 And there are three numbers so average = 54/3 = 18
54 days and 16 hours
54 x 16 = 864
3.375
HCF(54, 16) = 2
Average(54, 93) = 73.5
16 x 3.375 = 54.
The GCF is 2.
54 - 38 = 16
Three "16"'s can go into 54, with a remainder of 6.
the greatest common factor of 16 and 54 is 2
2a+54=38 2a=38-54 2a=-16 a=-16/2 a=-8