Aptitude - Percentage - Discussion
Discussion Forum : Percentage - General Questions (Q.No. 8)
8.
Two numbers A and B are such that the sum of 5% of A and 4% of B is two-third of the sum of 6% of A and 8% of B. Find the ratio of A : B.
Answer: Option
Explanation:
| 5% of A + 4% of B = | 2 | (6% of A + 8% of B) |
| 3 |
 |
5 | A + | 4 | B | = | 2 |  |
6 | A + | 8 | B |  |
| 100 | 100 | 3 | 100 | 100 |
| |
1 | A + | 1 | B | = | 1 | A + | 4 | B |
| 20 | 25 | 25 | 75 |
| |
|
1 | - | 1 | A = |
|
4 | - | 1 | B |
| 20 | 25 | 75 | 25 |
| |
1 | A = | 1 | B |
| 100 | 75 |
| A | = | 100 | = | 4 | . |
| B | 75 | 3 |
Required ratio = 4 : 3
Video Explanation: YouTube Video
Discussion:
52 comments Page 3 of 6.
Vaibhav said:
1 decade ago
5a+4b = 2/3(6a+8b).
15a+12b = 12a+16b.
a/b = 4/3.
So ratio is 4:3.
15a+12b = 12a+16b.
a/b = 4/3.
So ratio is 4:3.
Dharshini said:
9 months ago
@All.
Here's my explanation.
5 : 4
6 : 8
5 * 8 = 6 * 4.
40/24 = 4:3.
Here's my explanation.
5 : 4
6 : 8
5 * 8 = 6 * 4.
40/24 = 4:3.
(54)
Ramesh said:
7 years ago
Easier way is;
5A+4B=2/3(6A+8B),
15A+12B=12A+16B,
3A=4B,
A/B = 4/3.
5A+4B=2/3(6A+8B),
15A+12B=12A+16B,
3A=4B,
A/B = 4/3.
PARUL said:
1 decade ago
3(5A+4B) = 2(6A+8B).
15A-12A = 16B-12B.
3A = 4B.
A:B = 4:3.
15A-12A = 16B-12B.
3A = 4B.
A:B = 4:3.
Romita said:
1 decade ago
4/75-1/25 is not equal to 1/75 then hw a/b is equal to 4/3
AMIt said:
5 years ago
5A+4B = 2/3(6A+8B),
15A+12B = 12A+16B,
3A = 4B,
A/B = 4/3.
15A+12B = 12A+16B,
3A = 4B,
A/B = 4/3.
(4)
Sharika said:
10 years ago
We have to cross multiply if there is denominator value?
Daemon said:
2 years ago
Anyone, please explain this step 15A+12B=12A+16B?
(12)
Tshering said:
4 years ago
I got 3:4 can anyone explain why answer is 4:3?
(13)
Sobana said:
4 weeks ago
I got 3:4.
I can't understand. How come 4:3?
I can't understand. How come 4:3?
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