10JA stream goes down stream and covers the same distance upstream in

1.	10JA stream goes down stream and covers the same distance upstream in Shours. If thespeed of the stream is 2km/h. find the speed of stream in still water
Answer» Let the speed of the steamer in still water = x km/hr ER. RAVI KUMAR ROY Speed downstream = (x + 2) km/hr Distance between two ports = 4(x + 2) km .........1 Speed downstream = (x - 2) km/hr Distance between two ports = 5(x - 2) km .........2 From equation 1 and 2, we get 4(x + 2) = 5(x - 2) => 4x + 8 = 5x - 10 =>4x + 8 + 10 = 5x =>4x + 18 = 5x => 5x - 4x = 18 => x = 18 km/hr So,the speed of the steamer in still water = 18 km/hr

10JA stream goes down stream and covers the same distance upstream in Shours. If thespeed of the stream is 2km/h. find the speed of stream in still water

Answer»

Let the speed of the steamer in still water = x km/hr

ER. RAVI KUMAR ROY

Speed downstream = (x + 2) km/hr

Distance between two ports = 4(x + 2) km .........1

Speed downstream = (x - 2) km/hr

Distance between two ports = 5(x - 2) km .........2

From equation 1 and 2, we get

4(x + 2) = 5(x - 2)

=> 4x + 8 = 5x - 10

=>4x + 8 + 10 = 5x

=>4x + 18 = 5x

=> 5x - 4x = 18

=> x = 18 km/hr

So,the speed of the steamer in still water = 18 km/hr