ing downstream in a river, covers the distance between two towns in 20

1.	ing downstream in a river, covers the distance between two towns in 20 hours. Coming backvers this distance in 25 hours. The speed of water is 4 km/h. Find the distance between20. A steamer, goithe two towns.
Answer» Solution :- Let The Distance Of Two Towns = y km Let The Speed Of Steamer = x km/hr Speed Upstream = x+4 Speed Dowstream = x-4 Time = Distance/Speed Upstream Case 25 = y/x-4 25x-100 = y x = y+100 / 25 Downstream Case 20 = y/x+4 y = 20x+80 x = y+100 /25 y = 20(y+100 / 25) +80 y = 20y+2000 / 25 + 80 y = 20y+2000+2000 / 25 25y = 20y+4000 5y = 4000 y = 800 km Answer - 800 km

ing downstream in a river, covers the distance between two towns in 20 hours. Coming backvers this distance in 25 hours. The speed of water is 4 km/h. Find the distance between20. A steamer, goithe two towns.

Answer»

Solution :- Let The Distance Of Two Towns = y km

Let The Speed Of Steamer = x km/hr

Speed Upstream = x+4

Speed Dowstream = x-4

Time = Distance/Speed

Upstream Case

25 = y/x-4

25x-100 = y

x = y+100 / 25

Downstream Case

20 = y/x+4

y = 20x+80

x = y+100 /25

y = 20(y+100 / 25) +80

y = 20y+2000 / 25 + 80

y = 20y+2000+2000 / 25

25y = 20y+4000

5y = 4000

y = 800 km

Answer - 800 km