Aptitude - Ratio and Proportion - Discussion
Discussion Forum : Ratio and Proportion - General Questions (Q.No. 1)
1.
A and B together have Rs. 1210. If 
of A's amount is equal to 
of B's amount, how much amount does B have?
of A's amount is equal to of B's amount, how much amount does B have?
Answer: Option
Explanation:
| 4 | A | = | 2 | B | |
| 15 | 5 |
 A = |
 |
2 | x | 15 |  B |
| 5 | 4 |
| A = |
3 | B |
| 2 |
| |
A | = | 3 |
| B | 2 |
A : B = 3 : 2.
 B's share = Rs. |
|
1210 x | 2 | |
= Rs. 484. |
| 5 |
Discussion:
161 comments Page 12 of 17.
Shubham said:
9 years ago
Why we can not find the value of b directly?
b = (1210 X 2/5) = 484.
b = (1210 X 2/5) = 484.
Shambhu said:
9 years ago
Why 2/5 is taken?
Harrish crazie said:
9 years ago
Why 2/5 is used?
Jivraj singh rathore said:
9 years ago
(4/15)A = (2/5)B.
A/B = 3/2.
1210/5 = 242,
242 * 2 = 484.
A/B = 3/2.
1210/5 = 242,
242 * 2 = 484.
Bishal Timilsina said:
9 years ago
Let's B's amount be Rs (1210 - A).
According to questions;
4/15 of A = 2/5 of B [ B = Rs. (1210-A) ]
4A/15 =2/5 (1210 - A),
20A = 30 (1210 - A),
A = 3/2 (1210 - A),
2A = 3630 - 3A,
5A = 3630,
A = 3630/5,
So, A = 726.
Now, B's amount = 1210 - A.
= 1210 - 726.
= Rs. 484 =>answer.
According to questions;
4/15 of A = 2/5 of B [ B = Rs. (1210-A) ]
4A/15 =2/5 (1210 - A),
20A = 30 (1210 - A),
A = 3/2 (1210 - A),
2A = 3630 - 3A,
5A = 3630,
A = 3630/5,
So, A = 726.
Now, B's amount = 1210 - A.
= 1210 - 726.
= Rs. 484 =>answer.
Akshu said:
9 years ago
We can do this question in this way also.
A = 4/15, B = 2/5.
Both are equal to each other we can say that,
A = B -> (2/5 : 4/15) * 15.
A : B -> 6 : 4.
B -> 4/10 * 1210.
B -> 484 Ans.
A = 4/15, B = 2/5.
Both are equal to each other we can say that,
A = B -> (2/5 : 4/15) * 15.
A : B -> 6 : 4.
B -> 4/10 * 1210.
B -> 484 Ans.
Lester Gascon* said:
9 years ago
Thank you. I learned a lot here and its helped me to do the problems easily.
Sham Khungla said:
9 years ago
Calculate the ratio of milk and water in the new mixture if the quantity of = 35ltr, ratio of milk = 4 : 1, water added = 7ltr, then ratio of resulting mixture = ?
Swetha said:
9 years ago
I understand Cleary now. Thanks @Sridhar and @Buhvi.
Sikander said:
9 years ago
It is simple that the share of b is 2/5, it is understood that the share of a is 3/5. So apply the % and find out.
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