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Question

A man crosses a street 600 m long in 24 minutes. Find his speed in km/h.

This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper (8-Mar-2021) (Shift 2)
The correct answer is
1.5 km/h

Calculating Street Crossing Speed

The problem asks for the speed of a man crossing a street, given the distance and time. We need to express the speed in kilometers per hour (km/h).

Step 1: Convert Distance

The distance is given as 600 meters (m). To convert this to kilometers (km), we divide by 1000:

Distance = $\frac{600 \text{ m}}{1000 \text{ m/km}} = 0.6 \text{ km}$

Step 2: Convert Time

The time taken is 24 minutes. To convert this to hours (h), we divide by 60:

Time = $\frac{24 \text{ min}}{60 \text{ min/h}} = \frac{24}{60} \text{ h} = \frac{2}{5} \text{ h} = 0.4 \text{ h}$

Step 3: Calculate Speed

Speed is calculated using the formula:

Speed = $\frac{\text{Distance}}{\text{Time}}$

Now, substitute the converted values:

Speed = $\frac{0.6 \text{ km}}{0.4 \text{ h}}$

Speed = $\frac{6}{4} \text{ km/h}$

Speed = $1.5 \text{ km/h}$

Conclusion

The man's speed is 1.5 km/h.

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Similar Questions

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  2. A man driving a car at a speed of 79 km/hr crosses a bridge in 3.6 minutes. Find the length of the bridge.
  3. Ravikant cycles at a speed of $12.5\text{ km/h}$ and walks at a speed of $3\text{ km/h}$. To cover a distance of $40\text{ km}$ by cycle and walk both, Ravikant took $7\text{ hours}$. How many of these hours were spent cycling?
  4. A salesman has to cover 6 km in $\frac{3}{4}$ h. If he covers $\frac{1}{2}$ of the distance in $\frac{2}{3}$ of the total time, then what must be his speed (in km/h) to cover the remaining distance in the remaining time?
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Important Questions from Speed Time and Distance

  1. A journey of 900 km is completed in 11 h. If two-fifth of the journey is completed at the speed of 60 km/h, at what speed (in km/h) is the remaining journey completed?

  2. A car starts from point A towards point B, travelling at the speed of 20 km/h. 1 \(\frac{1}{2}\) hours later, another car starts from point A and travelling at the speed of 30 km/h and reaches 2 \(\frac{1}{2}\) hours before the first car. Find the distance between A and B.

  3. A bus covered a distance of 162 km. If speed of this bus is 15 m/s, then what will be the time taken ?

  4. An athlete runs an 800 m race in 96 seconds. His speed (in km / h) is:

  5. A person has to cover a distance of 150 km in 15 hours. If he traveled with the speed of 11.8 km/hr for 10 hours. At what speed he has to travel to cover the remaining distance in the remaining time?

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