sentence1: An investor can sell her MicroTron stock for 36 $ per share and her Dynaco stock for 60 $ per share , If she sells 300 shares altogether , some of each stock , at an average price per share of 40 $ , how many shares of Dynaco stock has she sold ?
sentence2: An investor can sell her MicroTron stock for less than 56 $ per share and her Dynaco stock for 60 $ per share , If she sells 300 shares altogether , some of each stock , at an average price per share of 40 $ , how many shares of Dynaco stock has she sold ?