A person travels 285 km in 6 hrs. First he took a bus and travelled at the speed of 40 km per hr. In the second part of the journey, he took a bus and travelled at the speed 55 km per hr. What distance did he travel by train?
138.33 km
172.5 km
156 km
142.5 km
124 km
142.5 km
In this question, the alligation method is applicable for the speed.
∴time spent in bus : time spent in train=456:456=1:1∴Distance travelled by train=2852=142.5km