Aptitude - Races and Games - Discussion

Discussion Forum : Races and Games - General Questions (Q.No. 11)
11.
In a 300 m race A beats B by 22.5 m or 6 seconds. B's time over the course is:
86 sec
80 sec
76 sec
None of these
Answer: Option
Explanation:

B runs 45 m in 6 sec.
2

B covers 300 m in 6 x 2 x 300 sec = 80 sec.
45

Discussion:
23 comments Page 3 of 3.

AJAY TOMAR said:   1 decade ago
Let see,
We know "(speed=distance/time)" or S=D/T
Given 22.5m in 6 sec then d=22.5,t=6sec
S=22.5/6
Now we have to find how much time taken to cover 300m distance.
T=D/S
=300/22.5/6
=80s

Brajesh said:   2 decades ago
See,

(45/2=22. 5).

It is simple that if 22. 5m distance is covered in 6 sec than.

300m distance is covered in (300/ (45/2) ) =300x (2/45) =13.33333 x 6=80 sec.

Shubha said:   2 decades ago
Please provide formula for 45/2


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