Distance travelled by bus = 42 km 365 m = 42 km + 365 m = 42 km + km = 42 km + 0.365 km = 42.365 km (1 km = 1000 m)
Distance travelled by car = 12 km 460 m = 12 km + 460 m = 12 km + km = 12 km + 0.460 km = 12.460 km
Distance travelled by walking = 640 m = km = 0.640 km
∴ Total distance travelled altogether
= Distance travelled by bus + Distance travelled by car + Distance travelled by walking
= 42.365 km + 12.460 km + 0.640 km
= 55.465 km
Thus, the total distance travelled by Avinash altogether is 55.465 km.