Aptitude - Races and Games - Discussion
Discussion Forum : Races and Games - General Questions (Q.No. 1)
1.
In a 100 m race, A can give B 10 m and C 28 m. In the same race B can give C:
Answer: Option
Explanation:
A : B = 100 : 90.
A : C = 100 : 72.
| B : C = | B | x | A | = | 90 | x | 100 | = | 90 | . |
| A | C | 100 | 72 | 72 |
When B runs 90 m, C runs 72 m.
| When B runs 100 m, C runs |  |
72 | x 100 |  m |
= 80 m. |
| 90 |
B can give C 20 m.
Discussion:
43 comments Page 2 of 5.
Manoj said:
9 years ago
Given A 100, B 10, C 28.
A gives B means 100 - 10 = 90 = B.
A gives C means 100 - 28 = 72 = C.
A : B = 100 : 90.
A : C = 100 : 72.
B : C = 90 : 72 -------> 90/72 = B/C.
Consider given one as 100.
B gives C is
B : C = 100 : 72/90.
C/B = 72/90 * 100 = 80m.
A gives B means 100 - 10 = 90 = B.
A gives C means 100 - 28 = 72 = C.
A : B = 100 : 90.
A : C = 100 : 72.
B : C = 90 : 72 -------> 90/72 = B/C.
Consider given one as 100.
B gives C is
B : C = 100 : 72/90.
C/B = 72/90 * 100 = 80m.
Deepika said:
1 decade ago
A : B = 100 : 90.
A : C = 100 : 72.
So divide both this equation you get C:B = 4:5.
And now we find for same 100 m race so multiply by 5*20=100 because we Find b can give c in same race.
4*20/5*20 = 80/100 = C/B.
So B can give C = 100-80 = 20 answer
A : C = 100 : 72.
So divide both this equation you get C:B = 4:5.
And now we find for same 100 m race so multiply by 5*20=100 because we Find b can give c in same race.
4*20/5*20 = 80/100 = C/B.
So B can give C = 100-80 = 20 answer
Dynamo said:
9 years ago
We have to compare between B & C.
If B goes 90.
C goes 72.
To be 100 we have to multiply by 100 and divide by 90.
90 * 100/90 ------> 72 * 100/90.
100 ------> 80.
So, B can give C = 100 - 80 = 20.
If B goes 90.
C goes 72.
To be 100 we have to multiply by 100 and divide by 90.
90 * 100/90 ------> 72 * 100/90.
100 ------> 80.
So, B can give C = 100 - 80 = 20.
Nadeem pasha said:
1 decade ago
100 --- A.
90 --- B.
72 --- C.
When B covers 90m distance between A and B is 18m,
When B covers 100m distance between B and C is,
90 --- 18
100 --- ?
By cross multiplication we get 20.
90 --- B.
72 --- C.
When B covers 90m distance between A and B is 18m,
When B covers 100m distance between B and C is,
90 --- 18
100 --- ?
By cross multiplication we get 20.
Jayasree said:
8 years ago
Does anyone know how can we solve this question by having the difference in distance values only( i.e, using 10 and 28)?
Please tell me.
Please tell me.
Gaurav said:
1 decade ago
100-10=90, 100-28=72;
Because according to question A can gives B 10m and A can gives C 28m. I try my best to solve your problem.
Because according to question A can gives B 10m and A can gives C 28m. I try my best to solve your problem.
Manojit said:
1 decade ago
Because it is same race. They must complete same distance so when B has completed 100 m. He will give C 20m.
Prasanna said:
1 decade ago
Why not going the race at which the question says? That is when finish the game B is 18m ahead of C.
Sanju said:
1 decade ago
When we took ratio between 100:90 we get 10. So they took 90 insted of 10. I hope you understand.
Jklomn said:
1 decade ago
B is 18 meters ahead of C when he is at 90 m, when he will finish the race he will be 20 m ahead.
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