Age is of no problem if you are clear with your career goal and why an MBA is needed. Top schools definitely have no discrimination on age at all. Trust me, you are not old at all. I am 37 and admitted by Wharton.
just look at school's average age. focus on the schools having higher average ages to make yourself comfortable. the resulct all depends coz application is a complex issue and you can never gurantee which school will admit you. Make a bigger pool to apply and it will make you on a safer side.