Question

Forinulate the following pr Ritu can row downstream 20 km in 2 hours, and upstream 4 km in 2 hours. Find her speed of rowing in still water and the speed of the current. ther finish an embroidery work in 4 days. while 3​

Answer 1

Answer:

Ritu can row downstream 20 km in 2 hour, and upstream 4 km in 2 hours.

Solution :-

Let the speed of Ritu in still water and the speed of stream be x km/h and y km/h.

                           

Upstream = (x – y) km/h                  

Downstream = (x + y) km/h                  

According to the question,                  

⇒ 2(x + y) = 20                  

⇒ x + y = 10 ... (i)                  

⇒ 2(x – y) = 4                  

⇒ x – y = 2 ... (ii)                          

Putting this equation in (i), we get                  

⇒ y = 4                  

Ritu’s speed in still water is 6 km/h

The speed of the current is 4 km/h.

Step-by-step explanation:

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