Renaldo can rollerblade 9.7 miles per hour. eliezer can rollerblade 8.2 miles per hour how much further will renaldo rollerblade in 0.75

As a salesperson you get $50/day and $3.60/each sales you make.if you want to make $60 in one day, how many sales would you need need to make ? a 3b 4c 5d 6 show work.