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
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:
193 comments Page 1 of 20.

Abhinaya said:   1 day ago
Speed = dis/time.
Dis = 600.
Speed = (600÷5*60) = 2m/sec.
We need speed km/hr 18/5.
2*18÷5 = 7.2km/hr.

Ramani murugan said:   2 months ago
s = d/t.
d = 600m,
t = 5m.
600/5 * 60,
= 2 * 18/5,
= 2 * 3.2,
= 7.2.
(9)

Pravin Tupe said:   2 months ago
Speed = Distance/Time.
Distance = 600 m = 600/1000 = 0.6 km
Time = 5 min = 5/60 = 0.083 min.
Speed = 0.6/0.083 = 7.2 km/hr.
(30)

Anu said:   3 months ago
@Vijaya Lakshmi.
it is how we get 18/5.
1 km = 1000m.
1 km/h = 1000m/h.
= 1000/60 m/min.
= 1000/(60*60) m/s.
= 1000/3600m/s.
= 5/18 m/s.
Similarly,
1 m/s = 18/5 km/h.
(20)

Asifkhan said:   5 months ago
Ans = Distance ÷ time*second.
= 600 ÷ 5 * 60.
= 7200.
Answer is 7.2.

{Convert into kilometre multiplied by 1000;
7200/1000.
7.2 kilometres in 1 hour}
(63)

Mohamed Faisal said:   6 months ago
Given:
Distance = 600 m
Time = 5 minutes.

So, find speed
Formula: speed = Distance/Time.
Apply =>speed = 600m/5 minutes.
=120 meters per minute.

(Answer: 120 meters per minute, So find for 1 hour i.e 1 hour = 60 minutes)
Then,
60 minutes x 120 meters = 7200m.
We know 1000 meters = 1 km.
So,
7000 meters = 7 km.
Extra 200 meters = 0.2
=> 7 km + 0.2 km = 7.2 km.
(94)

Abdul Basit said:   6 months ago
600 meters in 5 minutes.
To find 1 min distance;
= 600/5
= 120 meters in 1 min
60 min in 1 hour.

Multiply by 60 min to find the total distance in meters in 1 hour.
= 120 * 60.
= 7200 meter.

Convert into kilometre multiplied by 1000;
7200/1000.
7.2 kilometers in 1 hour.
(48)

Rinose said:   7 months ago
It was a format when converted to m/s to km /hr use 18/5 and Km/hr to m/s use 5/18.
(13)

Vinay sharma said:   7 months ago
Speed = Distance/Time.
600m Distance.

Time 5 Minute = 300 Seconds.
We need speed km/hr, it means 18/5.
600/300 * 18/5 = 36/5.
Ans = 7.2.
(21)

Priyanka said:   8 months ago
18/5 is a formula that's used to convert m\s to k/hour.
(15)


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