castles in the sand generates a rate of return of 12% on its investments and maintains a plowback ratio of 0.20. its earnings this year will be $5 per share. investors expect a rate of return of 10% on the stock. a. find the price and p/e ratio of the firm. (do not round intermediate calculations. round your answers to 2 decimal places.) b. find the price and p/e ratio of the firm if the plowback ratio is reduced to 0.10. (do not round intermediate calculations. round your answers to 2 decimal places.)