Mathematics · Speed, Time and Distance
Boat A starts from point P and goes downstream toward point Q. Boat A's speed in still water is 15 km/h and the stream speed is 5 km/h. After 1 hour, Boat B starts from the same point P going downstream toward Q with a speed of 10 km/h in still water. Boat A, upon reaching Q, immediately turns and returns upstream. Boat B continues downstream. If both boats meet 5 hours after Boat B started, and the meeting occurs during Boat A's return journey, find the distance between P and Q.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 196 km
- 2120 km
- 390 km✓
- 475 km
Correct answer
90 km
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