On January 1, Flint Inc. completed its analysis of the prospects for the Geriatric Toy Store and concluded that there was a 30-percent chance the stock price would be $ 145 in one year and an 70-percent chance the stock price would be $ 195. Six months later, Flint Inc. revised its estimated probabilities to a 45-percent chance of a stock price of $ 145 and a 55 percent chance of $ 195. If the market agrees with Flint Inc.'s revised probabilities, what is the expected change in stock price from January 1 to July 1? Assume the discount rate is zero. (Round answer to 2 decimal places, e.g. 15.25.)