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:
214 comments Page 18 of 22.
Manu said:
8 years ago
Step1: We are finding speed = distance/time.
Distance= 600mts,
Time = 5minutes, we are converting time is minutes into seconds so,
t = 5 * 60 = 300
Then, s =d/t=600/300= 2 mt per sec is comminng.
Now we r converting mt per sec to km per hour.
Then formula is x * 18/5,here x is s ,now 2*18/5=36/5=7.2km/hr .
Now speed =7.2km/hr.
Distance= 600mts,
Time = 5minutes, we are converting time is minutes into seconds so,
t = 5 * 60 = 300
Then, s =d/t=600/300= 2 mt per sec is comminng.
Now we r converting mt per sec to km per hour.
Then formula is x * 18/5,here x is s ,now 2*18/5=36/5=7.2km/hr .
Now speed =7.2km/hr.
Manu said:
8 years ago
Nice explanations, Thank you all.
Dinesh said:
8 years ago
Here is a simple solution guys.
distance - 600,
mins - 5,
600/5 = 120 speed.
120 * 60 seconds = 7200 meters/1000 meters.
= 7.2 km Result.
distance - 600,
mins - 5,
600/5 = 120 speed.
120 * 60 seconds = 7200 meters/1000 meters.
= 7.2 km Result.
Rika Raj said:
8 years ago
T=5/60hour,
D=600/1000Km=3/5Km,
Speed=Distance /Time=3/5*60/5=7.2Km/hr.
D=600/1000Km=3/5Km,
Speed=Distance /Time=3/5*60/5=7.2Km/hr.
Janne said:
8 years ago
Hi guys. I'm still confused. How did you compute 60x5/18 manually? How did you get the answer 50/8? Explain in detail.
Priya said:
8 years ago
How it is coming 18÷5? Please explain it.
Md. jahir uddin said:
8 years ago
Very nice solution. Thanks.
Mr.Nithin said:
8 years ago
Thank you guys for the explanation.
Awanish mishra said:
8 years ago
We know that s=d/t,
d=600m and t=5m,
we know that,
1min.=60sec,
therefore, 5min=5*60=300sec,
600/300,
= 2.
2 * 18/5 = 7.2m/m.
d=600m and t=5m,
we know that,
1min.=60sec,
therefore, 5min=5*60=300sec,
600/300,
= 2.
2 * 18/5 = 7.2m/m.
A.S.Raja said:
8 years ago
Thanks for the explanation friends.
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