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
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{ dividing denominator & numerator by 4 }
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which is similar to n:1 where 
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Answer:
5/3 or 1.66 or 1 2/3
Step-by-step explanation:
30/18 you can simply it to the factor of 6 or use a calc
5/3 if the person asks in fraction form and if they say that it can't be an improper fraction then it is 1 2/3 or get 1.6666 in calcutor
Answer:
5^4
Step-by-step explanation:
i hope this helps :)