Step 1:
Calculate Distance Covered in First 6 Hours
Advait's speed for the first 6 hours was 38km / h so the total distance covered is:
6 × 38 = 228km
Step 2:
Distance Covered in Next Segment
He traveled 70 km at 35km / h so the time taken for this segment is:
70/35 = 2 hours
Step 3:
Remaining Distance and Time
Total distance to cover = 947km Distance already covered = 228 + 70 = 298km
Remaining distance = 947 - 298
= 649km
Total time available = 19 hours
Time already used = 6+2=8 hours
Remaining time = 19-8 = 11 hours
Step 4: Find Required Speed
To cover 649 km in 11 hours, the required speed is:
649/11 = 59km / h
