The ratio of rainy days to non rainy days was 2 to 3. how many of the 30 days in april were rainy?

(30/(2+3))2=12

So there were 12 rainy days in April.

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If there are 2:3, rainy to non-rainy there are 5 equal parts of magnitude:  30/5=6

So each part is equal to 6.  So 6*2=12 rainy days and 6*3=18 non-rainy days.

For a 0.25 pfor b o.3pp (0.25+0.3)=0.28