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:
209 comments Page 6 of 21.

Asif said:   3 years ago
Thank you all for giving a great explanation.
(3)

Shima said:   3 years ago
Speed = Distance/Time.

Distance = 600 m = 600 *18/5 = 2160,
(We have to multiply distance * 18/5 to convert m to km)

Time = 5 mins = 5/60hrs,
(We have to divide mins by 60 to convert it to hr).

Now, Speed = 2160/5/60 = 2160/5(1/60) = 7.2,
Hope you understood now.
(3)

Kauma shube said:   4 months ago
Thanks for the explanation @Lavanya.
(3)

Shikha said:   2 decades ago
From where you got 18, I don't understand.
(2)

Akuymakan said:   4 years ago
I don't get it. Please explain in detail.
(2)

Kauma shube said:   4 months ago
Thanks all for explaining the answer.
(2)

Abhi said:   2 decades ago
What's the formula?
(1)

Sundar said:   2 decades ago
Hi Abhi & Shika,



Kindly go through the basic formulas for solving Time and Distance problems.



Have a nice day!
(1)

Sundar said:   2 decades ago
Hi Vidu and Sushree,

You questions is from where did 60 come?

Please concentrate on the unit name mentioned along with the numbers.

Speed = Distance/Time

Here Distance = 600 meters and Time = 5 mins.

Therefore, Speed = 600/5 meters/minutes.

We have to write it as in terms of meters/seconds. So we are multiplying it with 60 (1 min = 60 seconds).

So, Speed = 600/(5 x 60 sec) meters/seconds.

I strongly suggest all newbies to go through the basic formulas before posting your doubts here. So, kindly go through the basic formulas for solving Time and Distance problems.

Have a nice day!
(1)

Digant said:   1 decade ago
Forget this above mentioned method

one man cover 600 m in 5 min thn in 60 min (1 hour)how much he cover

( 60 x 600 ) / 5 = 7200 m = 7200 / 1000 = 7.2 km / hour

1 km = 1000 m
(1)


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