Whats the gcf of 48 and 78

The greatest common factor (GCF) of 48 and 78 is: 6

Factors of 48: 1, 2, 3, 4, 6, 8, 12, 16, 24, 48
Factors of 78: 1, 2, 3, 6, 13, 26, 39

The common factors between the two numbers are 1, 2, 3, and 6, but considering 6 is the highest number out of them, it is the greatest common factor.

We must find prime factoriztion 4 getting GCF 

FACTORS OF 48 : 1,2,3,4,6,8,12,16,24 & 48
FACTORS OF 78 : 1,2,3,6,13,26,39 & 78

WE can see the common factors of 48 and 78 are: 1,2,3 & 6
it means the GCF of 78 & 48 is 6 

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm