Half of your baseball card collection got wet and was ruined. you bought 19 cards to replace some that were lost. how many did you begin with if you now have 39

Hart manufacturing had six-month sales of $80 million, with $20 million of that amount from the internet. it set a goal to increase the percentage of total sales coming from the internet by 4 percent in the next six months. the results were total sales of $85 million. if the company meets its goal exactly, what will the dollar amount of internet sales be?