Mary is a tour guide.She wants to buy tickets of this scenic spot for 11 students under 16 years old.How much shouldshe pay at least?
Original price:$10
Save:$2 for children under 16 years old,adults over 60 and full-time students.
Group Bookings:There is a ten percent discount for groups of twelve ormore.
School:$6 for school groups of ten or more,every tenth ticket free.