Question

SOMEONE HELPETH ME PLEASE

Bob Bluster, the KNEWS meteorologist, determined that the mathematical odds of no rain tomorrow are 11:9. What would a mathematics student determine as the percent chance there will be rain tomorrow?

(If the odds of an event happening are a:b, then the probability that it occurs is a/a + b.)

Answer 1

11+9 is 20.
100/20=5
The odds are 11:9 that there will be no rain so 9 is the part the represents that it will rain.
9×5=45 so the answer is 45%.