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:
209 comments Page 8 of 21.
Pratik Dangol said:
10 years ago
In 5 mins 600 meter.
In 1 mins 600/5 = 120 meter.
In 60 mins (1hr) 120*60 meter = 7200 meter.
In 1 hr 7.2 km.
i.e 7.2 km/hr.
In 1 mins 600/5 = 120 meter.
In 60 mins (1hr) 120*60 meter = 7200 meter.
In 1 hr 7.2 km.
i.e 7.2 km/hr.
Jhanu said:
10 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.
Saikiran said:
9 years ago
Is there any shortcuts for this problem?
Suriya said:
9 years ago
In step 2 how it came 18?
Raaj said:
9 years ago
Be cool for 5min 600m, so for 1 min 600/50 = 120m.
For 60min 60*120 = 7200m.
For 60min 60*120 = 7200m.
Liyaqat said:
9 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:
9 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.
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