Why is reservation not a problem? If a SC/ST person whose parents are rich (maybe due to a govt. job by reservation itself?) and gets 1/2 of marks of a middle class person just by being lower caste, then there is an issue with reservation.

The correct approach is, if the parents of a lower caste person have got advantage of reservation, the reservation should go to next person in queue. This way benefits can be evenly distributed instead of benefitting few wealthy people.