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:
53 comments Page 6 of 6.
MONIKA said:
9 months ago
Below 8 years = 20.
Above 8 years is 2/3 of 8 yrs,
8 Years = 48,
So, 2/3 * 48 = 32,
32 + 48 = 80,
80 + 20 = 100.
Above 8 years is 2/3 of 8 yrs,
8 Years = 48,
So, 2/3 * 48 = 32,
32 + 48 = 80,
80 + 20 = 100.
(5)
Sobana said:
4 months ago
I got 3:4.
I can't understand. How come 4:3?
I can't understand. How come 4:3?
Vinodha said:
1 month ago
5A+4B = 2/3(6A+8B).
3(5A+4B) = 2(6A+8B).
15A+12B = 12A+16B,
15A-12A = 16B-12B,
3A = 4B,
A/B = 4/3,
A:B = 4:3.
3(5A+4B) = 2(6A+8B).
15A+12B = 12A+16B,
15A-12A = 16B-12B,
3A = 4B,
A/B = 4/3,
A:B = 4:3.
(5)
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