Anurag has 10 hours to get to Kolkata, which is at a distance of 500 km. His starting speed was 60 km/h for the first 3 hours. For the next 200 km, his speed was 50 km/h. What speed must he travel at now in order to arrive in Kolkata in the allotted 10 hours?
1
44 km/h
2
42.5 km/h
3
35 km/h
4
40 km/h