Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 8 Answered

a boat goes downstream and cover the distance between two ports in 5 hours while it covers the same distance upstream in 5-1/2 hours. find the speed of boat in still water if t he speed of stream is 1-1/2km/h
Asked by alokkumarbind2123 | 12 Oct, 2023, 04:25: PM
answered-by-expert Expert Answer
Question must be:
A boat goes downstream and cover the distance between two ports in 4 hours while it covers the same distance upstream in 5 hours. find the speed of boat in still water if the speed of stream is 2km/h.
Solution:
Distance between two ports be 'x' km
Let speed of the boat be 'y' km/hr 
Therefore, x = 4(y+2)
Also, x = 5(y - 2)
Therefore, 4(y+2) = 5(y - 2)
i.e. 4y + 8 = 5y - 10
i.e. y = 18
Hence, speed of the boat is 18 km/hr
Answered by Renu Varma | 19 Oct, 2023, 10:20: AM
CBSE 8 - Maths
Asked by debarurawtiya | 02 Feb, 2024, 05:28: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 8 - Maths
Asked by shivysharma52 | 27 Nov, 2023, 11:48: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 8 - Maths
Asked by pg7551031 | 30 Oct, 2023, 09:16: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 8 - Maths
Asked by anithaanitha39740 | 06 Oct, 2023, 08:09: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 8 - Maths
Asked by sharmilarawat880 | 09 Sep, 2023, 10:48: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 8 - Maths
Asked by pragatisanwan790 | 07 Jan, 2023, 04:01: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 8 - Maths
Asked by pinkiagarwal105 | 27 Jun, 2022, 03:02: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
Get Latest Study Material for Academic year 24-25 Click here
×