The first step is to find the fraction of the days it would not rain.3/10Next we need to understand the there are three days that it will not rain out of 10 days. (that is the pattern) But we need to know how many days it will not rain out of 90 days.To do this you need to multiply the fraction to get a number over 90 days.n/90our work should look like this:3/10 * 9 = 27/90Our answer : 27 days there will be no rain Hope this helps (:
