Question

a train cover a distance of 670 km in 6h5min. if it covers the first 390km of the journey at 90km /h , find its speed for the rest of the journey.​

Answer 1

Step-by-step explanation:

Total distt covrred=670km

total time taken=6hr 5min

1. 390 km

speed=90kmper hr

390/90=13/3hr=3hr and 20 min

rest time left= 6 hr 5 min-3hr 20 min=2hr 45 min

dist left=670km-390km= 280km

speed =dist/time

=280/2.45

8/7m per sec

hope this help u and tap thanks and mark brainliest plzzzz....