On a certain day the chance of rain is 80%?

Question

On a certain day the chance of rain is 80% in san francisco and 30% in Sydney. Assume that the chance of rain in the two cities is independent. What is the probability that it will not rain in either city?

A) 7%

B) 14%

C) 24%

D) 50%

Answer 1

the answer is 14% and the question is on this website with the answer in the last pages http://www.cde.ca.gov/ta/tg/sr/documents/rtqalg2.pdf
the quesiton # is 75