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0.39 or 39%

As a percent turned into a ratio, 3 over 10 would be 3:10

just write the fraction 5/2, that is a ratio.

50% and the ratio is 1:2

Write the symbols (cation then anion)Write the combining capacity for each element over the symbolUse the 'cross over' method and reduce the numbers to the lowest ratio

11:33 is 11 over 33 as ratio :)

1.5.2

1.71 over 100

7 to 12.

42/100

nine percent 9% 9 over 100

5 to 100, 5%

4.58 or as a ratio, 458 over 100.

90%

17.5%.

33.5%

75%

28%

60%

16%

45%

It is: 31%

250%

41.25%

585%