Problem of the Week - Algebra and Up - Sept. 20 to Sept. 26, 2020

Algebra and Up:

Question: There is a 40% chance of rain for Saturday and 40% chance of rain on Sunday. What is the probability it will rain on both Saturday and Sunday? 

Answer: 16% or 0.16 or 4/25

Solution: Making a probability tree, we see

Since there is a 40% of rain on both days, we multiply 0.40 × 0.40 = 0.16.