- A40 minutes
- B30 minutes
- C15 minutes
- D45 minutes
Step-by-Step Solution
X: 30/20 + 30/12 = 1.5 + 2.5 = 4 h. Y: 30/18 + 30/10 = 1 h 40 min + 3 h = 4 h 40 min. X wins by 40 minutes.
Answer: A) 40 minutes
Two rowing teams race 30 km downstream to a buoy and back. Team X rows at 16 km/h in still water, Team Y at 14 km/h, and the current is 4 km/h. By how many minutes does X win?
Competition practiceBoats & Streams
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 Boats & Streams practice questions
More Boats & Streams practice
A rower (6 km/h in still water) goes 4 km up a river flowing at 2 km/h and returns.…A launch (12 km/h in still water) heads 10 km upstream on a 2 km/h current. Then the…Launch A (10 km/h in still water) leaves a ghat at 6 a.m. going downstream. Launch B (16…A ferry (15 km/h in still water) plies 36 km downstream and back on a river flowing at 3…Over the same stretch, a boat's upstream and downstream times are in the ratio 4 : 3.…