hcf(85, 153) = 17 85 = 5 x 17 153 = 3² x 17 hcf = 17
The GCF is 17.
To do it in your head: think (60 + 8) + (80 + 5) then rearrange (still in your head): (60 + 80) + (8 + 5) 140 + 13 153
The factor pairs of 765 are: 1 × 765 3 × 255 5 × 153 9 × 85 15 × 51 17 × 45
The HCF of 40 & 12 is... 4
hcf(85, 153) = 17 85 = 5 x 17 153 = 3² x 17 hcf = 17
17
LCM(85, 153) = 765.
The GCF is 17.
The GCF is 17.
HCF: 5
17
153
The GCF/HCF of 85 and 185 is 5.
It is 153.
153 / 85 = 1.8 x 100 = 180 Therefore, the number that 153 is 85 per cent of, is 180.
17 and 306, respectively.