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.
Ravi said:
7 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.
(2)
Chinmay bhola said:
8 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.
Sowmya said:
1 decade ago
@Mukesh vyas.
Solved it as 45/60*60/40 which gives the result of 45/40 i.e., in the form of ratio it is 45:40 means for 45 points he give 40 points. But here they asked for 90 points. So it got doubled i.e., 90/80 or 90:80.
So we got the difference as 10 points which is our required answer.
Solved it as 45/60*60/40 which gives the result of 45/40 i.e., in the form of ratio it is 45:40 means for 45 points he give 40 points. But here they asked for 90 points. So it got doubled i.e., 90/80 or 90:80.
So we got the difference as 10 points which is our required answer.
Kanna TJ said:
9 years ago
Here 45/40 is for a game of point 60. They asked how many point can B give to C in a game of 90.
So convert B ie. 45 to 90 which is multiply (45 * 2) = 90 multiply by the same with 40 ie 40 * 2 = 80 then we get;
90/80 so B give C 10 points in a game of 90.
So convert B ie. 45 to 90 which is multiply (45 * 2) = 90 multiply by the same with 40 ie 40 * 2 = 80 then we get;
90/80 so B give C 10 points in a game of 90.
Obhg said:
1 decade ago
How it will come 90/80? Because 90 is a total points, please clear my doubt?
Solved it as 45/60*60/40 which gives the result of 45/40 i.e., in the form of ratio it is 45:40 means for 45 points he give 40 points. But here they asked for 90 points.
Solved it as 45/60*60/40 which gives the result of 45/40 i.e., in the form of ratio it is 45:40 means for 45 points he give 40 points. But here they asked for 90 points.
Rohit said:
10 years ago
Your doubt is 90/80.
Because 40/45*90.
= 8/9*90.
9 divided by 90, answer is 10.
Then, 8*10 = 80.
B give C in a game of 90.
= 90/80. Ratio 90:80.
90-80 = 10.
Answer: B give C 10 points in a game of 90.
Because 40/45*90.
= 8/9*90.
9 divided by 90, answer is 10.
Then, 8*10 = 80.
B give C in a game of 90.
= 90/80. Ratio 90:80.
90-80 = 10.
Answer: B give C 10 points in a game of 90.
Usman said:
8 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?
Mukesh vyas said:
1 decade ago
Please clarification 90/80 thus 45/60*60/40 for 9/8 but answer sheet for 90/80 please right clarification this question.
Priya said:
1 decade ago
@Habib
Arey! The total points is 60 and from that he gives him 15. So 60-15 = 45
Arey! The total points is 60 and from that he gives him 15. So 60-15 = 45
Mahima said:
1 decade ago
I also got the same doubt - how 45/60*60/40 = 90/80?
But now my doubt is cleared
But now my doubt is cleared
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