To reach her goal of buying a new bike, Marsha will need to save $10 each week. The italicized word placement .Which means she is getting paid but we don't know how much she is making a day which we don't know about. In the second one To reach her goal of buying a new bike each week, Marsha will need to save $10. Again because of the word place meant it means that every week she is saving money and not making any money instead she has to find it like on a bus or on the floor and she is trying every week.