Distance between Alex's home and school = 25 km 500 m
Distance between school and Arjun's home = 9 km 600 m
Distance between Alex's home and Arjun's home = 25 km 500 m + 9 km 600 m = 34 km 1100 m
we know that, 1 km = 1000 m
1100 m = 1 km 100 m
Distance between Alex's home and Arjun's home = 34 km + 1 km + 100 m
= 35 km 100 m