Aptitude - Ratio and Proportion - Discussion
Discussion Forum : Ratio and Proportion - General Questions (Q.No. 12)
12.
If 40% of a number is equal to two-third of another number, what is the ratio of first number to the second number?
Answer: Option
Explanation:
| Let 40% of A = | 2 | B |
| 3 |
| Then, | 40A | = | 2B |
| 100 | 3 |
 |
2A | = | 2B |
| 5 | 3 |
| |
A | = |  |
2 | x | 5 |  |
= | 5 |
| B | 3 | 2 | 3 |
A : B = 5 : 3.
Discussion:
25 comments Page 2 of 3.
Pratika said:
8 years ago
Given 40% i.e 40/100 = 2/5;
New ratio 2/5 : 2/3 = 6/10 = 3/5.
New ratio 2/5 : 2/3 = 6/10 = 3/5.
(1)
Rekha nayak said:
9 years ago
Please explain to me, why you have taken 2A/5 = 2B/3.
Tejashri said:
9 years ago
No, @Mehak. It's wrong.
MEHAK said:
9 years ago
A/B = 2/5 X 3/2.
A/B = 6/10.
A/B = 3/5.
Am I right?
A/B = 6/10.
A/B = 3/5.
Am I right?
Sanjeev said:
9 years ago
Please explain me Why you have taken 2b/3?
Swagger said:
10 years ago
@Kusu you said why not 3:5:
Let say:
2A/5 = 2B/3.
First number being A and second number being B.
The question asked for the ratio of the first number to the second.
That means you got to get it into this form: A/B or A:B.
So rearrange 2A/5 = 2B/3 to get A/B = 5/3.
Therefore the ratio is of A:B is 5:3.
Let say:
2A/5 = 2B/3.
First number being A and second number being B.
The question asked for the ratio of the first number to the second.
That means you got to get it into this form: A/B or A:B.
So rearrange 2A/5 = 2B/3 to get A/B = 5/3.
Therefore the ratio is of A:B is 5:3.
Kavitha said:
10 years ago
Please guide me through option testing for this sum.
Shrey said:
10 years ago
Ratio are given as 2:3:5.
200:300:500 (assume).
As 15% (230), 10% (330) and 20% (100) are respective increase in salaries.
New ratio 200:300:500.
230:330:600.
Answer = 23:33:60.
Answer comes in about 15 sec.
200:300:500 (assume).
As 15% (230), 10% (330) and 20% (100) are respective increase in salaries.
New ratio 200:300:500.
230:330:600.
Answer = 23:33:60.
Answer comes in about 15 sec.
Nivi said:
1 decade ago
Why we took 40% of number 40/100 instead of 140/100?
(1)
Ashok said:
1 decade ago
If 40% of a number is equal to two-third of another number, what is the ratio of first number to the second number?
40% of x number is equal to 2/3.
So 40/100 =2/3.
If you get 200;120.
Simply 5:3.
40% of x number is equal to 2/3.
So 40/100 =2/3.
If you get 200;120.
Simply 5:3.
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