While on a vacation, a group can rent bicycles and scooters by the week. they get a reduced rental rate if they rent 5 bicycles for every 2 scooters rented. the reduced rate per bicycle is $15.50 per week and the reduced rate per scooter is $160 per week. the sales tax on each rental is 12%. the group has $1600 available to spend on bicycle and scooter rentals. what is the greatest number of bicycles and the greatest number of scooters the group can rent if the ratio of bicycles to scooters is 5: 2?