- A2
- B3
- C4
- D1
Step-by-Step Solution
Twice the time upstream means downstream speed is twice the upstream speed: 6 + s = 2(6 − s). So 6 + s = 12 − 2s, giving 3s = 6, s = 2 km/h.
Answer: A) 2
A man can row at 6 km/h in still water. If it takes him twice as long to row a certain distance upstream as downstream, find the speed of the stream (in km/h).
Competition practiceSpeed, Time & Distance
Master this topic in 30 minutes a day.
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All Speed, Time & Distance practice questions
More Speed, Time & Distance practice
Two trains, 120 m and 130 m long, run in opposite directions at 40 km/h and 32 km/h. How…A boat covers 20 km downstream in 2 hours and returns the same distance upstream in 4…A car covers 240 km in 4 hours. If it increases its speed by 20 km/h, how long will it…A man rows 24 km downstream in 3 hours and rows the same 24 km upstream in 4 hours. Find…A train 200 m long running at 54 km/h crosses a platform 250 m long. How long does it…