Aptitude - Percentage - Discussion
Discussion Forum : Percentage - General Questions (Q.No. 6)
6.
If 20% of a = b, then b% of 20 is the same as:
Answer: Option
Explanation:
20% of a = b  |
20 | a = b. |
| 100 |
 b% of 20 = |
 |
b | x 20 |  |
= | |
20 | a x | 1 | x 20 | |
= | 4 | a = 4% of a. |
| 100 | 100 | 100 | 100 |
Discussion:
69 comments Page 1 of 7.
Bittu Rana said:
3 weeks ago
B = 20% of A.
Then B% of 20 = (20% of A)% of 20,
= 20/100 of A/100 of 20,
= (20/100)*(A/100)*20
= (4/100)*A = 4% of A.
Then B% of 20 = (20% of A)% of 20,
= 20/100 of A/100 of 20,
= (20/100)*(A/100)*20
= (4/100)*A = 4% of A.
(1)
Samrat said:
3 months ago
But here we considered a as 100, but if we consider a as 10, the answer will be different, which is 20% of a; then it should not be considered as universal.
(2)
TenzinRabgay said:
6 months ago
From where 1/100 came? Anyone, please explain.
(9)
Shivam Patel said:
7 months ago
Take 100% as complete;
Now solve the first part;
20% of A means 20% of 100,
Then B is already the same as A means B is also 20%.
According to the question;
B = 20%.
20% of 20 is 4.
Now solve the first part;
20% of A means 20% of 100,
Then B is already the same as A means B is also 20%.
According to the question;
B = 20%.
20% of 20 is 4.
(25)
Yaswanth said:
1 year ago
@All.
I have another method.
we can take a=100.
20% of a = b;
20% of 100 = 20; it means b=20%
20% of 20 = 4.
I have another method.
we can take a=100.
20% of a = b;
20% of 100 = 20; it means b=20%
20% of 20 = 4.
(153)
Jane said:
1 year ago
Given :0
20% of a= b
1/5 a = b
b = a/5 ..
To find : b% of 20 =?
(a/5)% of 20 which can be written as 20% of a/5 = 4% of a.
20% of a= b
1/5 a = b
b = a/5 ..
To find : b% of 20 =?
(a/5)% of 20 which can be written as 20% of a/5 = 4% of a.
(18)
Shafik said:
2 years ago
b = 1/5 a.
a : b = 1 : 5.
5-1 = 4% of a.
a : b = 1 : 5.
5-1 = 4% of a.
(60)
NANDISHA D said:
2 years ago
If a is 100 then b=20 which is 1/5.
Hence if b=20 then 1/5 of 20 is 4.
Hence if b=20 then 1/5 of 20 is 4.
(77)
JIYA said:
2 years ago
Hi,
20/100a * 1/100 * 20 ,
400a/10,000,
4/100a%.
Now,
4/100 *100 = 4%.
20/100a * 1/100 * 20 ,
400a/10,000,
4/100a%.
Now,
4/100 *100 = 4%.
(6)
Waleed Ahmed said:
2 years ago
(20a/100* 1/100* 20)
Why 1/100 is applied here? Please explain.
Why 1/100 is applied here? Please explain.
(18)
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