The incident happened in Ranjit Nagar area of central Delhi Monday evening.
Himanshu, accompanied by his two friends, was returning home after tuition classes.
His bicycle collided with that of one of the accused, who was coming from the other side of the road.
A police officer said, "Heated arguments led to a fight between Himanshu and the two juveniles, who beat him up and he collapsed."
Himanshu's two friends informed his family and the police and also took him to a hospital where he was pronounced dead.
The officer said the suspected attackers, residents of the same locality, were arrested in the night.