Aptitude - Races and Games - Discussion
Discussion Forum : Races and Games - General Questions (Q.No. 9)
9.
In a 200 metres race A beats B by 35 m or 7 seconds. A's time over the course is:
Answer: Option
Explanation:
B runs 35 m in 7 sec.
 B covers 200 m in |
 |
7 | x 200 |  |
= 40 sec. |
| 35 |
B's time over the course = 40 sec.
A's time over the course (40 - 7) sec = 33 sec.
Discussion:
9 comments Page 1 of 1.
Srikanth said:
6 years ago
When A reached 200m B reaches 165m.
So, B reaches last 35 min in 7 sec,
If B reaches 35m in 7 sec then how much time it takes to reach 165m is (7/35)*165 = ?.
= 33 seconds..
When B reaches 165m in 33sec then A reaches 200m in same time.
So, B reaches last 35 min in 7 sec,
If B reaches 35m in 7 sec then how much time it takes to reach 165m is (7/35)*165 = ?.
= 33 seconds..
When B reaches 165m in 33sec then A reaches 200m in same time.
(2)
Bhawani Pratap said:
7 years ago
According to question if you read clearly it says that,
A beats B by 35 meters this statement clearly says A has completed 200 meters and B is lagging behind by 35 meters.
or A has completed the 200-meter distance 7 seconds early to B.
So both the information is about the completion of A.
The correct answer is
Speed of A =35/7=5 m/sec.
total time to cover 200m will be.
Time taken by A =200/5,
T=40sec.
A beats B by 35 meters this statement clearly says A has completed 200 meters and B is lagging behind by 35 meters.
or A has completed the 200-meter distance 7 seconds early to B.
So both the information is about the completion of A.
The correct answer is
Speed of A =35/7=5 m/sec.
total time to cover 200m will be.
Time taken by A =200/5,
T=40sec.
(2)
Surya senthilnathan said:
7 years ago
Speed of b= 35/7=5m/sec.
When A finishes 200 m, B completes 165m.
Time taken to complete 165m gives, A's course time.
T=165/5=33sec.
When A finishes 200 m, B completes 165m.
Time taken to complete 165m gives, A's course time.
T=165/5=33sec.
Rajon debnath said:
8 years ago
200-35 = 165,
(165/35) * 7 = 33.
(165/35) * 7 = 33.
(1)
Paul said:
1 decade ago
All you know is B runs the LAST 35 m in 7 seconds. This does not necessarily relate to speeds in the earlier part of the race.
In the extreme, both A and B may have taken an hour to run the first 100m (the information supplied does not disprove this).
The answer is D.
In the extreme, both A and B may have taken an hour to run the first 100m (the information supplied does not disprove this).
The answer is D.
Anmol said:
1 decade ago
Simple it is.
B reaches after 7 secs when A has reached to the end point.
Actually 35 meters to cover B takes 7 secs.
So 5 meters per second.
Or 1 meter in 1/5 secs.
For 200 meters it is 40 secs.
So A's time is 40-7 = 33.
B reaches after 7 secs when A has reached to the end point.
Actually 35 meters to cover B takes 7 secs.
So 5 meters per second.
Or 1 meter in 1/5 secs.
For 200 meters it is 40 secs.
So A's time is 40-7 = 33.
Imran Ansari said:
1 decade ago
For B:
35m - 7sec.
200m - (x) sec.
Therefore,
x = (7X200) /35 = 40 sec. (For B).
Therefore,
For A = 40 - 7.
= 33 sec. Answer.
35m - 7sec.
200m - (x) sec.
Therefore,
x = (7X200) /35 = 40 sec. (For B).
Therefore,
For A = 40 - 7.
= 33 sec. Answer.
Priyabrata said:
1 decade ago
After A covers, then B reached the destination after 7sec. And B covers 35 metres within that 7 sec.
Then B runs 35m in 7sec.
Ans 33sec.
Then B runs 35m in 7sec.
Ans 33sec.
SHAMBHU NATH DEY said:
1 decade ago
A beats B by 35 m or 7 seconds, here mention B runs 35 m in 7 sec.
Actual meaning A runs 35 m in 7.
Ans 40 sec.
Actual meaning A runs 35 m in 7.
Ans 40 sec.
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