Question

- If a train travels the first 25 km in 30 min and the next 45 km in 40 min and remaining 30 km in 30 min. Find the average velocity.

Answer 1

Answer:

Given train travels 12 minutes with speed 30 km \hr

Then train travels =

60

30

×12=6km

And train travels 8 minutes with speed 45 km\ hr

Then train travels =

60

45

×8=6km

Then train travels distance in 12+8=20 minutes =6+6=12 km

Then average speed =

20

12

×60=36 km \hr