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 3 of 6.
Ramesh said:
8 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.
Nithy said:
8 years ago
How it comes 4/75 in second step?
Vaibhav said:
8 years ago
It is an easy method, Thanks @Nitish
Sankar said:
7 years ago
Thanks @Nithish.
Vishal don said:
7 years ago
Thanks @Nitish.
Sanjay said:
6 years ago
How we can take 3:4 to 4:3?
Pankaj said:
6 years ago
Thank you @Nitish.
Ashik said:
5 years ago
Thanks @Nithish.
Madhulika said:
9 years ago
5% of A+4% of B=2/3(6% of A+8%of B).
15A+12B=12A+16B,
3A=4B,
A/B=4/3.
15A+12B=12A+16B,
3A=4B,
A/B=4/3.
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.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers