If you reduce them by 12 you'll get
![\frac{2}{3}](https://tex.z-dn.net/?f=%20%5Cfrac%7B2%7D%7B3%7D%20)
If that's what you're asking
8/14 , 12/21, 16/28, 20/35
Answer: I think your answer would be B. 1/9
I hope it's right
Im assuming that 100p is 1 pound? So that ratio should be A) 1:10 and 20mm is 2cm so the ratio is B)1:2