Comprehension Passage
The speed of boat A in still water is 25% more than the speed of stream. After travelling for 4 hours in downstream, the speed of boat A in still water is increased by 4 km/h and it travelled for 6 hours more. While returning the speed of boat A in still water is further decreased by 6 km/h and the boat travelled for 5 hours. The total distance travelled by boat A is 394 km.
The ratio of the speed of boats A and B in still water is 5 : 8, respectively. After travelling for 5 hours in upstream, the boat B returned back by the same route and travelled for 5 hours more by decreasing its speed in still water by 8 km/h. Find the total distance covered by boat B ?
1
260 km
2
250 km
3
170 km
4
320 km
5
280 km