The damage incurred in a certain type of accident during a given
year can only be 0, 1000, 5000 and 10000 dollars. These types of
damages occur with probabilities 0.8, 0.1, 0.08 and 0.02
respectively. If an insurance company offers a 300 dollar
deductible policy and wishes to make a 100-dollar profit in average
per policy, what should be the sales rate for each insurance
policy?