A man takes 4 hours and 30 minutes to row a boat a distance of 18 km downtream and 3 hours 30 minute...........

Quantitative Aptitude (MTS) Time & distance

A man takes 4 hours and 30 minutes to row a boat a distance of 18 km downtream, and 3 hours 30 minutes to row the boat a

distance of 7 km upstream. Find the speed of the stream.

This questions was previously asked in

SSC MTS 20th July 2022 Shift-1

4 km/h

2 km/h

3 km/h

1 km/h

- To find the speed of the stream, we need to calculate the speeds of rowing downstream and upstream.

- Downstream: 18 km in 4 hours and 30 minutes (which is 4.5 hours). So, the speed is 18 km / 4.5 hours = 4 km/h.

- Upstream: 7 km in 3 hours and 30 minutes (which is 3.5 hours). So, the speed is 7 km / 3.5 hours = 2 km/h.

- The speed of the stream can be found by using the formula: \(\text{Speed of the stream} = \frac{\text{Downstream speed - Upstream speed}}{2}\).

- \(\text{Speed of the stream} = \frac{4 - 2}{2} = 1 \text{ km/h}\).

- Correct answer: Option 4 - 1 km/h

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