# 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?
3.6
7.2
8.4
10
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:
182 comments Page 1 of 19.

Raghavendra BS said:   3 months ago
600/5 = 120.
120m per minute.
120 * 60min = 7200m.
1000m = 1 km.
7200/1000 = 7.2km per hour.
(112)

Vignesh said:   4 months ago
Good explanation. Thanks, everyone.
(19)

Vijaya lakshmi said:   4 months ago
How did we get 18/5? Please explain to me.
(30)

Aatir said:   4 months ago
Distance = 600m = 600/1000 km
= 0.6 km.

Time = 5mint = 5/60 hr = 1/12 hr.
Speed = Distance/time.
= (0.6)/1/12.
= 0.6×12.
=7.2
(50)

Mayank Garg said:   5 months ago
Time = 5 min.
Distance = 600 meter.

Distance = 600/5 = 120m in one minute.
In hour = 120x60 = 7200m in one hour.
1km = 1000m.
(97)

Nisha said:   6 months ago
600m = 5 minutes, 120m = 1 minutes (600/5),
1 hour = 60 minutes,
7200m = 60 minutes (120*60),
1000m = 1 km.
7200m = 7.2 km.
(28)

P Lakshmi said:   6 months ago
Changing kmph to mps.
1km = 1000m.
Minute = 60sec.
1000/60×60 = 5/18.

Changing opposite mps to kmph is 18/5.
(12)

Logeshwari said:   6 months ago
1000 meter = 1 kilometer.
3600 seconds = 1 hour.
1000 meter/3600second=1 kilometer/1 hour.
5 meter/18 second = 1 kilometer/1 hour.
(8)

Deepanshu said:   7 months ago
How did we get 18/5?
(14)

Arun kumar said:   9 months ago
How did we get 18/5? Please explain.
(38)