Aptitude - Races and Games - Discussion
Discussion Forum : Races and Games - General Questions (Q.No. 5)
5.
At a game of billiards, A can give B 15 points in 60 and A can give C to 20 points in 60. How many points can B give C in a game of 90?
Answer: Option
Explanation:
A : B = 60 : 45.
A : C = 60 : 40.
 |
B | = |  |
B | x | A |  |
= | |
45 | x | 60 | |
= | 45 | = | 90 | = 90 : 80. |
| C | A | C | 60 | 40 | 40 | 80 |
B can give C 10 points in a game of 90.
Discussion:
28 comments Page 1 of 3.
Merawi said:
4 years ago
Thanks @Ravi.
Sujit Roy said:
4 years ago
Now it is clear to me. Thanks @Ravi.
KHAMALI EMMANUEL said:
4 years ago
Please someone clarify how it comes 45/40 to 90/80?
(1)
Ravi said:
5 years ago
Consider it a 60mts race.
Since give and take policy is implied here it means all ends the race in same time.
Now,
A can give B a lead a 15mts in 60mts race.
So dist covered by B=45mts in time A covers 60mts.
So A/B = 60/45---->(1)
similarly,
A/C = 60/40 - - - >(2)
Now,
To get B/C we divide (2)/(1)
We get 45/40.
Conclusion ,in a race of 45mts B can give A a lead of 5mts
So,in 90mts race.
B can give 5*2 = 10mts lead.
Hence,
Ans = 10.
Since give and take policy is implied here it means all ends the race in same time.
Now,
A can give B a lead a 15mts in 60mts race.
So dist covered by B=45mts in time A covers 60mts.
So A/B = 60/45---->(1)
similarly,
A/C = 60/40 - - - >(2)
Now,
To get B/C we divide (2)/(1)
We get 45/40.
Conclusion ,in a race of 45mts B can give A a lead of 5mts
So,in 90mts race.
B can give 5*2 = 10mts lead.
Hence,
Ans = 10.
(1)
Khushi said:
5 years ago
Thanks for the explanation, @Rohit.
RAKESH said:
6 years ago
B can give C 25 points in a game of 100.
Saurabh said:
6 years ago
How both ratio is same?
Usman said:
6 years ago
In a game of billiards, A can give B 20 points in 60 and he can give C 30 points in 60. How many points can B give C in a game of 100? can anyone tell me answer?
Chinmay bhola said:
6 years ago
60-15 = 45
and 60-20 = 40 (remember this time it 60 points ,not a 100 meter race .)
Ratio will be A:B 60:45 and A:C 60:40.
Now B/A*A/C = B/C = B:C = 45/60*60/40 = 9:8 ,so B:C = 9:8
Multiply 10 in both rato, coz it will change nothing
Now it's B:C = 90:80.
90-80=10points , these 10 points B can give C in a game of 90.
and 60-20 = 40 (remember this time it 60 points ,not a 100 meter race .)
Ratio will be A:B 60:45 and A:C 60:40.
Now B/A*A/C = B/C = B:C = 45/60*60/40 = 9:8 ,so B:C = 9:8
Multiply 10 in both rato, coz it will change nothing
Now it's B:C = 90:80.
90-80=10points , these 10 points B can give C in a game of 90.
Sharvaree said:
7 years ago
How A : B should be 60 : 45?
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