Question

A motor boat whose speed is 18 km/h in still water takes 1 hour more to go 24 km upstream
than to return downstream to the same spot. Find the speed of the stream.​

Answer 1

Answer:

The given speed of the motor boat in the still water is equal to 18 km/hr. The given distance travelled by motor boat is equal to 24 km. The time taken to travel 24 km downstream bymotor boat = 1 hour. x=122=6km/hr.

Answer 2

Answer:

The given speed of the motor boat in the still water is equal to 18 km/hr. The given distance travelled by motor boat is equal to 24 km. The time taken to travel 24 km downstream by motor boat = 1 hour. x=122=6km/hr.

Step-by-step explanation:

Given:-

Speed of boat =18km/hr

Distance =24km

Let x be the speed of stream.

Let t

1

and t

2

be the time for upstream and downstream.

As we know that,

speed=

time

distance

⇒time=

speed

distance

For upstream,

Speed =(18−x)km/hr

Distance =24km

Time =t

1

Therefore,

t

1

=

18−x

24