need this done fast as possible

According to a study, 70% of all snowmen constructed in the world have a carrot for a nose. Also, 68% of the snowmen built across the world are built in Mommy, and of these snowmen, 84% have a carrot for a nose. (Show your work) a. Find the probability that a snowman built in Nomay, did not have a carrot for a nose. (Round to two decimals as needed) b. Find the probability that a snowman randomly selected from across the world was built in Nonivay or has a carrot for a nose. (Round to two decimals as needed)