# if / elif / else
if condition1:
do A
elif condition2:
do B
else:
do this
age =int(input("What is your age? "))
if age < 12:
print("Please pay $5.")
elif age <= 18:
print("Please pay $7.")
elif age > 18:
print("Please pay $12.")
else:
print("Sorry, you have to grow taller before you can ride.")