Patricia Has at Most $36,000 to Invest in Securities in the Form

Patricia has at most $36,000 to invest in securities in the form of corporate stocks. She has narrowed her choices to two groups of stocks: growth stocks that she assumes will yield a 13% return (dividends and capital appreciation) within a year and speculative stocks that she assumes will yield a 26% return (mainly in capital appreciation) within a year. Determine how much she should invest in each group of stocks in order to maximize the return on her investments within a year if she has decided to invest at least 3 times as much in growth stocks as in speculative stocks.
$__________ in growth stocks and $ __________ in speculative stocks
maximum return: $ __________