Question

give me the answer fast​

Answer 1

Answer:

speed of streamer= 19km/hr

distance = 180km

Step-by-step explanation:

let the speed of streamer be x km/hr

upstream speed = (x-1)km/hr

downstream speed= (x+1)km/hr

(x-1)*10= (x+1)*9

10x-10=9x+9

10x-9x=9+10  

x=19

speed of stremer= 19km/hr

distance=(19-1)*10

             =180km

hope this will help you                                                                            

Answer 2

Answer:

Step-by-step explanation:

let speed of steamer=x km/hr

speed upstream= [x-1]

speed downstream [x+1]

ATP

10[x-1]=9[x+1]

10x-10=9x+9

10x-9x=9+10

x=19

speed of streamer=19 km/hr

upstream=19-1=18 km/hr

downstream=19+1=20 km/hr

distance b/w ports = 20×9=180 km