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:
224 comments Page 14 of 23.
Jayalakshmi said:
10 years ago
Formula: speed = distance/time.
In question, given distance is in meter so convert the km and time given the minute so convert hours.
In question, given distance is in meter so convert the km and time given the minute so convert hours.
Samyuktha said:
10 years ago
Please make me understand this whole sum properly by anyone.
Rezuan said:
10 years ago
Distance = 600 m.
Time = 5 min = (5 * 60)s = 300 s.
Speed = ?
Speed = Distance/Time = 600m/300s = 2 m/s.
According to question we need to convert it m/s to km/hr.
m/sec=18/5 km/hr.
So, Speed = (2 * 18/5) km/hr.
Speed = 7.2 km/hr.
Time = 5 min = (5 * 60)s = 300 s.
Speed = ?
Speed = Distance/Time = 600m/300s = 2 m/s.
According to question we need to convert it m/s to km/hr.
m/sec=18/5 km/hr.
So, Speed = (2 * 18/5) km/hr.
Speed = 7.2 km/hr.
Mohite Kallappa said:
10 years ago
All values is used in above example.
S = d/t, ( 600/5 * 60) m/sec.
Then convert m/ sec into km/hr.
Suppoes,
km/hr = s.
1000/3600 = 2.
5/18 = 2.
= 2 * 18/5.
= 7.2 km/hr.
S = d/t, ( 600/5 * 60) m/sec.
Then convert m/ sec into km/hr.
Suppoes,
km/hr = s.
1000/3600 = 2.
5/18 = 2.
= 2 * 18/5.
= 7.2 km/hr.
Prince said:
10 years ago
@Minalo.
If you want to change in km then multiply the value with 18/5.
If you want to change in km then multiply the value with 18/5.
Minalo said:
10 years ago
@Digant. I don't get where you get 18 from? Please explain me.
Kiranmaahi said:
10 years ago
@Digant.
Thank you so much I understood your explanation.
Thank you so much I understood your explanation.
Jjtt said:
10 years ago
Can someone explain where the 5 and 8 came from? I understand the formula but the 5 and 8 are throwing me off.
Bukhari said:
10 years ago
It is very simple. If someone covers a distance of 600 meters in 5 minutes then in 1hour (60 minutes) he will cover a distance is,
600 metre = 5 minutes.
Multiplying with 12 both sides.
600 x 12 = 5 x 12,
7200 m = 60 minutes (1 hour),
7200/1000 m = 1 hour,
7.2 km in one hour.
So, speed is 7.2 km/hour.
600 metre = 5 minutes.
Multiplying with 12 both sides.
600 x 12 = 5 x 12,
7200 m = 60 minutes (1 hour),
7200/1000 m = 1 hour,
7.2 km in one hour.
So, speed is 7.2 km/hour.
Sathiyaraj said:
10 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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