Welcome to the zoo Day open :  Fees : Monday to Friday    Adults : $ 8. 00 10:00 am~6:00 pm   Ages 8~14: $ 3. 00 Saturday to Sunday  Ages 15~18 : $ 6. 00 8 :00 am~8 :00 pm  Under 8 : Free Try our train ride for $ 2. 00 per person! ,. . If you are 13 and your brother is 7, how much do you pay for the train ride?
3 dollars. 4 dollars. 6 dollars. 7 dollars.