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:
209 comments Page 11 of 21.
K.p.m.vasanth said:
8 years ago
Thank you for giving the explanation. Now I get the solution.
Gaurav Viradiya said:
8 years ago
600m convert to KM = 600/1000 = 0.6,
5min convert to Hrs. = 5/60 = 0.083,
Finally, 0.6/0.083 = 7.22.
5min convert to Hrs. = 5/60 = 0.083,
Finally, 0.6/0.083 = 7.22.
Kishor venkkat said:
8 years ago
Why do you convert to m/sec?
Praneel said:
8 years ago
@Kishor Venkkat.
It is based on m.k.s system of units.
m.k.s= metre.kilogram.second.
So, as given in minutes, we have to convert it into seconds.
It is based on m.k.s system of units.
m.k.s= metre.kilogram.second.
So, as given in minutes, we have to convert it into seconds.
Aayushi@Suri said:
8 years ago
Can anyone explain, What's wrong in below solution?
Step 1: 600m -> 600*18/5 =2160 km.
Step 2: 5 m -> 5/60 =0.083hr.
Result :
Speed = 2160 km/0.083 hr =26024 km/hr.
Where did I make a mistake? Please explain.
Step 1: 600m -> 600*18/5 =2160 km.
Step 2: 5 m -> 5/60 =0.083hr.
Result :
Speed = 2160 km/0.083 hr =26024 km/hr.
Where did I make a mistake? Please explain.
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.
Atul said:
8 years ago
600/5=120/min,
1min=120m,
60min=60*120m=7200,
1000m=1km.
So, 7200m/1000m=7.2/hr.
1min=120m,
60min=60*120m=7200,
1000m=1km.
So, 7200m/1000m=7.2/hr.
(1)
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.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers