Answer:
Hey mate, please describe your question perfectly.
which is similar to n:1 where 
<u>Step-by-step explanation:</u>
Here we have to Express in the form n:1 give n as a decimal 21:12 . Let's find out:
Given ratio as 21:12 . Let's convert it into n:1 , where n is decimal
⇒ 
⇒ 
⇒ 
⇒ 
⇒
{ dividing denominator & numerator by 4 }
⇒ 
⇒ 
⇒
which is similar to n:1 where 
85
Also, this is 5 points.
When you divide it in a calculator it comes out to 19.6. Can u pls paste the answers here?
Answer:
0.72
Step-by-step explanation:
hope i helped
pls mark brainliest im trying to level up