Question

ritu can row downstream 20km in 2hours and upstream 4km in 2hours. Find her speed of rowing in still water and the speed of current ​( plz answer fast its urgent)

Answer 1

Answer:

20/4=5

4/2=2

Step-by-step explanation:

please mark brainleast ram ram

Answer 2

Answer:

Step-by-step explanation:

let the speed in still water be x and speed of current be y.

so, upstream = x-y

downstream  = x+y

speed= distance/ time

So,  s = 20/2 = 10

⇒x+y = 10 km/h

s= 4/2 = 2km/h

⇒x-y =2

⇒x= y+2 ..................[i]

from eq. [i]

x+y = 10

y+2+y = 10

2y+2 =10

2y = 10 -2 = 8

y = 4km/h

⇒ x= 4+2  = 6km/h