Formulae on Arithmetic


 


1
A ratio is a comparison of two numbers. We generally separate the two numbers in the ratio with a colon (:). Suppose we want to write the ratio of 8 and 12.



2
To compare ratios, write them as fractions. The ratios are equal if they are equal when written as fractions.



   3
Remember to be careful! Order matters! A ratio of 1:7 is not the same as a ratio of 7:1.



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