A person can swim in water with a speed of 13 km/hr in still water. If the…
20232023
A person can swim in water with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, what will be the time taken by the person to go 68 km downstream?
- A.
2.5 hours
- B.
3 hours
- C.
4 hours
- D.
3.5 hours
Attempted by 5 students.
Show answer & explanation
Correct answer: C
First, calculate the downstream speed by adding the swimmer's still water speed to the stream speed: 13 km/hr + 4 km/hr = 17 km/hr.
Next, divide the total distance by the downstream speed to find the time: 68 km / 17 km/hr = 4 hours.
Thus, the time taken is 4 hours.