Aptitude - Time and Distance - Discussion
Discussion Forum : Time and Distance - General Questions (Q.No. 1)
1.
A person crosses a 600 m long street in 5 minutes. What is his speed in km per hour?
Answer: Option
Explanation:
| Speed = |  |
600 |  m/sec. |
| 5 x 60 |
= 2 m/sec.
Converting m/sec to km/hr (see important formulas section)
| = | |
2 x | 18 | |
km/hr |
| 5 |
= 7.2 km/hr.
Discussion:
214 comments Page 15 of 22.
Liyaqat said:
10 years ago
1000m = 1 km.
600m = 600/1000 km = 0.6 km.
Time = 5 min.
5min=60/5 = 12h.
S=0.6 x 12 = 7.2.
Is my pattern is right or wrong. I got the answer. But I'm so confuse, I'm doing in a wrong manner but my answer is right that's strange. Please is there anyone to explain.
600m = 600/1000 km = 0.6 km.
Time = 5 min.
5min=60/5 = 12h.
S=0.6 x 12 = 7.2.
Is my pattern is right or wrong. I got the answer. But I'm so confuse, I'm doing in a wrong manner but my answer is right that's strange. Please is there anyone to explain.
Liyaqat said:
10 years ago
@Suriya.
As we know 1km/hour=1000m / 60min x 60sec [bcoz 1km=1000m n 1h=60sec x 60min].
So 1 km/hour = 5/18 m/s.
Now listen if we convert km/h into m/s then we x 5/18.
If we convert m/s into km/h then we x 18/5. So 18 is there. Because we take a reciprocal during conversion of m to km.
As we know 1km/hour=1000m / 60min x 60sec [bcoz 1km=1000m n 1h=60sec x 60min].
So 1 km/hour = 5/18 m/s.
Now listen if we convert km/h into m/s then we x 5/18.
If we convert m/s into km/h then we x 18/5. So 18 is there. Because we take a reciprocal during conversion of m to km.
Ahmad Sangrah said:
9 years ago
I'm confused with this type question, now I understand properly from your suggestions.
Thank you all.
Thank you all.
Bdboy Hasan said:
9 years ago
In 5 minute he run 600 meter.
So, in 60 minute he run (600*60)/5 meter = 7200 meter.
So, speed is 7200/1000 = 7.2 kmph.
Note : We have to remember that we need to convert time in one hour and distance in km.
So, in 60 minute he run (600*60)/5 meter = 7200 meter.
So, speed is 7200/1000 = 7.2 kmph.
Note : We have to remember that we need to convert time in one hour and distance in km.
Naidu said:
9 years ago
The speed is 600 m/5 min.
So, 5 min = 600 meters.
(1 hour = 12 * 5 min = 60 mins).
5min * 12 = 600m * 12.
60 minutes = 7200 meters.
So, 1 hour = 7000 m + 200 m.
1 hour = 7 km + 200 m.
= 7.2 km.
So, 5 min = 600 meters.
(1 hour = 12 * 5 min = 60 mins).
5min * 12 = 600m * 12.
60 minutes = 7200 meters.
So, 1 hour = 7000 m + 200 m.
1 hour = 7 km + 200 m.
= 7.2 km.
Pankaj kumar verma said:
9 years ago
1 hour 12 m - 5 = 60 minute = 1 HOUR,
Than 600 m - 12 = 7200 m
Now convert km/hour,
Than required answer 7200/1000 = 7.2 km/hour.
Than 600 m - 12 = 7200 m
Now convert km/hour,
Than required answer 7200/1000 = 7.2 km/hour.
Reehana said:
9 years ago
When we convert km/hr to m/s it's 18/5 and when we convert m/s to km/he it's 5/18.
Maureenash said:
9 years ago
Thanks for the clear and different solution.
Riyadhksd said:
9 years ago
I will explain you in a simple way.
Distance/time into 3.6,
So, 600/300 * 3.6 = 7.2,
3.6 = 3600/1000.
Distance/time into 3.6,
So, 600/300 * 3.6 = 7.2,
3.6 = 3600/1000.
Sathiyaraj said:
9 years ago
Man crosses 600 meters in 5 minutes.
12 x 5 = 60 minutes => 1 hour,
So, 600 x 12 = 7200 meters/hr =>7.2 km/hr
12 x 5 = 60 minutes => 1 hour,
So, 600 x 12 = 7200 meters/hr =>7.2 km/hr
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