The Hirsch family is planning a three-week trip to the rainforest this August. This area experiences humidity levels of 90% or more 70% of the time in August. How many days in the rain forest can the family expect to have humidity levels below 90%? Explain
If the area experiences humidity levels above 90% or more 70% of the time.....then 30% of the time the humidity level is below 90%
And 3 weeks = 21 days .....so.....
21 days * 30% of these = about 6.3 days = 6 days (rounded)