## Chance of Rain

## Work Time

# Chance of Rain

On Friday morning, Joey hears this weather report: There is an 80% chance of rain on Saturday and an 80% chance of rain on Sunday.

Joey says, “That means there is an 80% chance that it will rain on at least one day this weekend.” Joey is wrong.

- What is the chance that it will rain on at least one day during the weekend? Justify your answer mathematically.