$70. Because first he had $450 then he spends $210 (450-210= 240) which he is left with $240
After that he divided the money (240/4=60) which gives him $60, then he distributed 3 (60-30=20 or 60/3=20).
he then finds $50 on the road (50+20=70) which he now has $70.
The answer is $70
