RRB RPF RPSF SI and CONS Model Papers 10 with solutions

Question : 39 of 120

Marks: +1, -0

A boat goes 8 km in one hour along the stream and 2 km in one hour against the stream. The speed (in km/hr) of the stream is

Solution:

(2) Let the speed of boat in still water = x kmph and that of stream = y kmph
∴ x + y = 8
x – y = 2
∴ x + y – (x – y) = 8 – 2
⇒ 2y = 6
⇒ y =

6/2

= 3 kmph

Go to Question:

Prev Question

Next Question