On January 1, Bramble Inc. completed its analysis of the prospects for the Geriatric Toy Store and concluded that there was a 10 percent chance the stock price would be $100 in one year and an 90 -percent chance the stock price would be $150. Shx months bater. Bramble inc revised its estimated probabilities to a 25 -percent chance of a stock price of $100 and a 75 percent chance of $150. If the market agrees with Bramble 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, eg. 15.25.) Expected change in stock price