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The speed of a boat in still water is 10 km/hr. It covers a distance of 50 km upstream in 6 hours. What is the speed (in km/hr) of the stream?
  • a)
    1.2
  • b)
    1.5
  • c)
    1.6
  • d)
    2
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
The speed of a boat in still water is 10 km/hr. It covers a distance ...
Speed of boat = 10 km/hr
Upstream speed 50/6 = 25/3 km/hr
So, Downstream speed 35/3 km/hr.
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Most Upvoted Answer
The speed of a boat in still water is 10 km/hr. It covers a distance ...
Problem: Speed of the boat in still water is 10 km/hr. It covers a distance of 50 km upstream in 6 hours. What is the speed (in km/hr) of the stream?

Solution:

Let's assume the speed of the stream to be x km/hr.

We know that the speed of the boat upstream is given by (speed of boat in still water - speed of stream).

Therefore, the speed of the boat upstream = (10 - x) km/hr.

We also know that the distance covered upstream is 50 km.

Hence, using the formula: Distance = Speed x Time

50 = (10 - x) x 6

50 = 60 - 6x

6x = 10

x = 10/6

x = 1.67 km/hr (approx.)

Therefore, the speed of the stream is 1.6 km/hr (approx.)

Answer: Option (c) 1.6
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The speed of a boat in still water is 10 km/hr. It covers a distance of 50 km upstream in 6 hours. What is the speed (in km/hr) of the stream?a)1.2b)1.5c)1.6d)2Correct answer is option 'C'. Can you explain this answer?
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