Question

*The speed of a boat in still water is 5 km/hr more than the speed of the stream
ne boat goes 28 km downstream in 3 hours 30 minutes, find the speed of the stream​

Answer 1

Answer:

46.5km/h

Step-by-step explanation:

Speed of stream= x km/h

Speed of boat= x+5km/h

Distance covered dowmstream= 28km

Time taken = 3 1/2 h

Speed = distance ×time

= 28× 7/2 =98km/h

Also, speed downstream= boat speed + stream speed

= x + (x+5)

= 2x+5

Acc. to the question,

2x+5=98

2x=98-5

2x=93

x=93÷2

x=46.5

Therefore, speed of stream is 46.5km/h

Hope it is helpful:)