segway is a stock costs $100 per share. An investor estimates that in one year there is a 1 in 10 chance that a stock purchase will lose 20% of its value, a 2 in 10 chance that it will break even, a 4 in 10 chance that it will gain 15%, and a 3 in 10 chance that it will gain 30%. What is the expected value of one share of stock, after one year, based on these estimates?