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:
166 comments Page 5 of 17.
Megha said:
6 years ago
As a total proportion of B is 2/5 of the total so the proportion of b is = 2.
and total proportion is 5; so A's proportion 5-2 = 3.
And B= 2/5 * total = 2/5*1210 = 484.
And A = 1210- 484 = 726.
Thanks.
and total proportion is 5; so A's proportion 5-2 = 3.
And B= 2/5 * total = 2/5*1210 = 484.
And A = 1210- 484 = 726.
Thanks.
(2)
Anomie said:
6 years ago
A+B = 1210.
(4/15)A = (2/5)B,
2A = 3B.
Therefore, A = (3B)/2,
and substituting, (3B/2) + B = 1210,
and hence, 5B=2420 => B = 484.
(4/15)A = (2/5)B,
2A = 3B.
Therefore, A = (3B)/2,
and substituting, (3B/2) + B = 1210,
and hence, 5B=2420 => B = 484.
(3)
Mahender said:
6 years ago
Thanks @Sridhar.
Nazeem khan said:
6 years ago
Thank you @Bhuvi.
Anushka said:
6 years ago
Thanks for explaining the answer @Sridhar.
Prince said:
6 years ago
Very clear explanation, thanks @Sridhar.
Smit patel said:
6 years ago
A+B=1210
4A/15=2B/5
A=3B/2.
3B/2+B=1210
5B=2420
B=484.
4A/15=2B/5
A=3B/2.
3B/2+B=1210
5B=2420
B=484.
Thiru said:
7 years ago
2/5(1210) = 2420/5 = 484.
Naomi said:
7 years ago
We can also do it this way;
If 4/15 of A = 2/5 of B then,
1210 * 4/15= 322.6.
Therefore if 322.6 - 0.4 (divide 2/5).
Then x - 0.6 is 483.9 that is 484.
If 4/15 of A = 2/5 of B then,
1210 * 4/15= 322.6.
Therefore if 322.6 - 0.4 (divide 2/5).
Then x - 0.6 is 483.9 that is 484.
AKASH KUMAR said:
7 years ago
I am not understanding the last step can anyone explain it?
(1)
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