05A steamer goes downstream and covers the distancebetween two ports in 4 hours while it covers the samedistance upstream in 5 hours. If the speed of thestream is 2 km/h. find the speed of the steamer in stillwatert 3616 KMPH40T 17 KMPHDan,ha(A)18 KMPH(D) 20 KMPH

05A steamer goes downstream and covers the distancebetween two ports i

1.	05A steamer goes downstream and covers the distancebetween two ports in 4 hours while it covers the samedistance upstream in 5 hours. If the speed of thestream is 2 km/h. find the speed of the steamer in stillwatert 3616 KMPH40T 17 KMPHDan,ha(A)18 KMPH(D) 20 KMPH
Answer» Let 'x' be the speed of the streamer in still water.Distance in both cases is same We know, speed=distance/time. So when downstream,x + 2 = d/4=> d = 4x + 8. When upstream,x - 2 = d/5=> d = 5x - 10. Since, d is same=>4x + 8 = 5x - 10=> 5x - 4x = 10+8=> x = 18.Hence, speed of the streamer in still water is 18 kmph.