# Find the speed of the stream in Km/h.

A person covers 18 km along the stream in 4 hours and covers the same distance against the stream in 12 hrs. Find the speed of the stream in Km/h.

- 1.5
- 1.0
- 1.75
- 3.0

**Answer: (4) 3.0**

Explanation:-

Distance = 18km

Taken time by a person = 4 hours

Then, the speed of a person = 18/4 = 4.5km/h

Again, time taken by a person = 12h

Then, speed of a person = 18/12 = 1.5km/h

Speed of stream = (4 – 1.5)km/h

= 3.0 hm/h

Hence, the speed of stream is 3.0km/h.