A ferry takes 85 minutes to row to place B from another place A along the stream. The distance between place A and place B is 25.5 km. If the speed of the ferry in still water is four times more than…

Question

A ferry takes 85 minutes to row to place B from another place A along the stream. The distance between place A and place B is 25.5 km. If the speed of the ferry in still water is four times more than that of the stream, then how much distance will the ferry cover in 4.9 hours against the stream?

PYQPulse · Accepted Answer

52.92 km

PYQPulse · Answer

Explanation: ATQ, Given: Distance (A–B) = 25.5 km Time downstream = 85 min = 17/12 hr Downstream speed Speed in still water = 4 × stream speed So, 5v = 18⟹v = 3.6 km/h Upstream speed 4v − v = 3v = 10.8 km/h Distance in 4.9 hr upstream 10.8 × 4.9 = 52.92 km

A ferry takes 85 minutes to row to place B from another place A along the stream. The distance between place A and place B is 25.5 km. If the speed of the ferry in still water is four times more than that of the stream, then how much distance will the ferry cover in 4.9 hours against the stream?

Answer: B. 52.92 km

Explanation

A ferry takes 85 minutes to row to place B from another place A along the stream. The distance between place A and place B is 25.5 km. If the speed of the ferry in still water is four times more than that of the stream, then how much distance will the ferry cover in 4.9 hours against the stream?

Answer: B. 52.92 km

Explanation