12/10 = 6/5 The ratio is 6:5
The ratio is 4:5
The ratio of 15 over 12 is 5:4.
60:12 is the same ratio as 5:1
No, it is not equivalent. Think of it this way. If you had £12 and I had £5 then you would have money in the ratio of 12 to 5 compared to me. If you then only had £5 and I had £17 (which represents the new ratio of 5 to 17) you would not agree that this was equivalent as a proportion (you would rightly feel that you had lost out)!
It is 12/20 = 3/5.
5/4
It is: 12 to 5
It is the same ratio as: 6, 24 and 10
It is 5 inches to 12, exactly as in the question. This ratio cannot be simplified since there are no units given for 12.
12 to 10
5 over 12