To raise money for a class trip, Rana’s class sells granola bars. On the first day, 20 bars are sold. On the following days, the number of granola bars sold increases by 5 bars per day. Rana’s class wants to raise $650. How many granola bars in total are sold by the end of the 6th day? Each granola bars costs $1. On which day of sales will the students reach their goal?