# Boats and Streams - Quantitative Aptitude (MCQ) questions for Q. 21570

**Q. The speed of boat in still water is 20 km/hr. If it travels 26 km downstream and 14 km upstream in same time, what is the speed of the stream?***- Published on 06 May 16***a.** 4 km/hr

**b.** 5 km/hr

**c.** 6 km/hr

**d.** 7 km/hr

**ANSWER: 6 km/hr**

Let X be speed of stream

Speed of boat downstream = (20 + X )

Speed of boat upstream = (20 – X)

It is given that boat takes same time to travel 26 km downstream and 14 km upstream

[26/(20 +X)] = [14 / (20 – X)]

520 – 26 X = 280 + 14X

40X = 240

X = 6 km/hr