Request a call back

Asked by 0 Mili_28😉😁🤗 | 19 Nov, 2020, 09:08: PM
Let the speed of the stream be x km/h.
Here the speed of water is 3 km/h
Speed downstream will be = (x + 3) km/h
Speed upstream will be = (x − 3) km/h
Time taken in downstream is 15 hours and
Time taken in upstream is 20 hours
Now, distance downstream = distance upstream⇒
15(x + 3) = 20(x − 3)
⇒ 15x + 45 = 20x − 60
⇒ 15x − 20x = −60 − 45
⇒ −5x = −105 or x = 21 km/h
Therefore, speed downstream = 21 + 3 = 24 km/h
As Distance downstream and upstream are both same. We can calculate the distance by using any of the cases.
So, distance between the two towns = Downstream speed × Time taken in downstream = 24 × 15 = 360 km
Answered by | 26 Nov, 2020, 08:32: PM

## Concept Videos

CBSE 8 - Maths
Asked by shaiba.mpt.1 | 25 May, 2023, 08:19: PM
CBSE 8 - Maths
Asked by kartikeydwivedi624 | 29 Dec, 2022, 10:36: AM
CBSE 8 - Maths
Asked by shivmuni002 | 18 Dec, 2022, 08:34: PM
CBSE 8 - Maths
Asked by meera4165 | 17 Jul, 2022, 08:09: PM
CBSE 8 - Maths
Asked by sherusunani | 24 May, 2022, 05:25: PM
CBSE 8 - Maths
Asked by deepsikhab71.8cpsb | 10 Aug, 2021, 09:57: AM