In the 30 day month of April, for every three days it rained, there were two days it did not rain. The number of days in April on which it rained was how much greater than the number of days on which it did not rain?

Answer 1

days rained : days not rained = 3:2 = 3x : 2x

3x + 2x = 30
5x = 30
x = 6
number of days it rained = 18, number it did not rain = 12

what is the difference in those two results?