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:
180 comments Page 1 of 18.

Araz Muhammad Tareen said:   1 year ago
The easiest way for solving this question is;

Divide distance by time: 600/5 = 120.
Then multiply 120 x 60 = 7200.
Then divide 7200 with 1000 meter = 7.2.
(194)

R Selva said:   10 months ago
600/5=120m
60*120=7200
7.2km.

Correct me, If I am wrong.
(92)

Mayank Garg said:   2 months ago
Time = 5 min.
Distance = 600 meter.

Distance = 600/5 = 120m in one minute.
In hour = 120x60 = 7200m in one hour.
1km = 1000m.
7200m = 7.2m=>answer.
(51)

Xiyoz said:   6 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.
(48)

Abhigyan Mund said:   6 months ago
We know,

1 min = 60 sec.
5 min = 60 * 5 = 300 sec.
A/c to question;

Distance = 600 m.
Time = 300 Sec.
Now speed = Distance/ Time = 600/ 300 = 2 m/s.
Converting km to meter, multiply with 18/5.
Now, 2*18/5 = 36/5 = 7.2 km/hr.
(46)

Reena roy said:   9 months ago
How did 18 get ( 2*18/5)?
(44)

Browin said:   7 months ago
S = d/t.
600m = 0.6km.
5minutes = 5/60 = 0.083hr,
S = 0.6/0.083,
= 7.2km/hr.
(43)

Bash Richard said:   11 months ago
Distance= 600m
= 0.6km
Time = 5mins.
=5/60hrs.
Speed = D/T.
= 0.6/0.08333.
= 7.2km/hr.
So, Speed = 7.2km/hr.
(39)

Prashanth said:   9 months ago
D = S*T.
D = 600m,
T = 5 mints => 5 * 60 = 300 sec.

S = D/T = 600/300 = 2 m/sec.
convert m/sec to km/hr,
2*18/5 = 7.5.
(33)

Arun kumar said:   5 months ago
How did we get 18/5? Please explain.
(33)


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