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 5 of 21.
Logeshwari said:
2 years ago
1000 meter = 1 kilometer.
3600 seconds = 1 hour.
1000 meter/3600second=1 kilometer/1 hour.
5 meter/18 second = 1 kilometer/1 hour.
3600 seconds = 1 hour.
1000 meter/3600second=1 kilometer/1 hour.
5 meter/18 second = 1 kilometer/1 hour.
(10)
Shreeraksha H Bhandary said:
4 months ago
Speed = distance ÷ time.
= 600÷(5×60),
= 2 m/s.
Speed in km/hr:
= 2×(18/5),
= 7.2 km/hr.
= 600÷(5×60),
= 2 m/s.
Speed in km/hr:
= 2×(18/5),
= 7.2 km/hr.
(10)
Mansi tyagi said:
1 year ago
Speed = 600 m/sec.
=> 600/ 5 x 60,
= 2 m/sec.
Converting m/sec to km/hr (see important formulas section)
2 multiply 3600/1000,
= 18 km/hr.
Then
= 2 x18/5 km/hr
= 7.2 km/hr.
=> 600/ 5 x 60,
= 2 m/sec.
Converting m/sec to km/hr (see important formulas section)
2 multiply 3600/1000,
= 18 km/hr.
Then
= 2 x18/5 km/hr
= 7.2 km/hr.
(7)
Majji deepika said:
1 month ago
Given data.
Distance(d) = 600m
Time(t) = 5m(converting into sec)
t = 5 * 60 = 300s.
Find : speed = ?(in km/hr)
Now apply the formulaic;
Speed =distance/time
Speed=600/300=2m/s
So, over answer is km/hr.
Now the formula is (a m/s=a*(18/5)km/hr)
Now apply
2m/s = 2 * (18/5)km/hr.
Speed = 7.2km/hr.
Distance(d) = 600m
Time(t) = 5m(converting into sec)
t = 5 * 60 = 300s.
Find : speed = ?(in km/hr)
Now apply the formulaic;
Speed =distance/time
Speed=600/300=2m/s
So, over answer is km/hr.
Now the formula is (a m/s=a*(18/5)km/hr)
Now apply
2m/s = 2 * (18/5)km/hr.
Speed = 7.2km/hr.
(7)
Afsa.S said:
3 years ago
Should we convert 5 minutes to secs? Anyone, explain me.
(5)
Abhinaya said:
6 months 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.
Dis = 600.
Speed = (600÷5*60) = 2m/sec.
We need speed km/hr 18/5.
2*18÷5 = 7.2km/hr.
(4)
Devendra rajput said:
2 months ago
Your Explanation is better than others. Thanks @Lavanya.
(4)
Dffse said:
1 month ago
Can anyone explain it clearly?
(4)
Hello said:
3 weeks ago
@Mercy and @Raj.
18/5 is used when we convert metres per second to km per hour. And 5/18 is used when we convert km per hour to metres per second.
It is a shortcut. As we see 5km/hr to m/sec.
We usually do 5* (1000/60*60) =5* (1000/3600) =5* (10/36) =5* (5/18).
Thus, while converting from km/hr to m/s, using 5/18 is simple.
18/5 is used when we convert metres per second to km per hour. And 5/18 is used when we convert km per hour to metres per second.
It is a shortcut. As we see 5km/hr to m/sec.
We usually do 5* (1000/60*60) =5* (1000/3600) =5* (10/36) =5* (5/18).
Thus, while converting from km/hr to m/s, using 5/18 is simple.
(4)
Mohammed Imran said:
4 years ago
Guy's those who don't know how 18 comes.
Here is the answer 3.6 multiply 5=18?
Here is the answer 3.6 multiply 5=18?
(3)
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