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:
68 comments Page 6 of 7.
Gurkirat said:
1 decade ago
Good solutions all.
Neha said:
1 decade ago
20% of a = b.
Let a = 100.
= 20/100*100 = 20.
b = 20.
= 20/100*20 = 4.
4% of a.
Let a = 100.
= 20/100*100 = 20.
b = 20.
= 20/100*20 = 4.
4% of a.
Uthaya Rani.S said:
1 decade ago
20/100*a = b.
20% of b = ?
20/100*b = 20a/100*20/100.
(Because b = 20a/100, so 20b/100 = 400/1000).
Answer = 4a/100 => 4%.
20% of b = ?
20/100*b = 20a/100*20/100.
(Because b = 20a/100, so 20b/100 = 400/1000).
Answer = 4a/100 => 4%.
Narayana Rao Gartam said:
1 decade ago
Lets say A = 100, and B is 20% of A, So B = 20.
Now, what 20% of B.( we need 20% from 20) i.e 4%.
Now, what 20% of B.( we need 20% from 20) i.e 4%.
Sunil said:
1 decade ago
@Habiba simple step :
60-15 : 45.
At present he bought it at 15 So,
It is (45/15)*100: 300.
60-15 : 45.
At present he bought it at 15 So,
It is (45/15)*100: 300.
Agila said:
1 decade ago
Please explain why a=20/100*a and b=b/100*20 why this different?
Swaminathan Vembu said:
1 decade ago
The Question -> f 20% of a = b, then b% of 20 is the same as ?
Now since 20/100 * a = b,
b = 1/5*a = 0.2a.
b% of 20 implies 0.2a / 100 * 20 = 0.04a = 4% of a [4/100 * a].
Now since 20/100 * a = b,
b = 1/5*a = 0.2a.
b% of 20 implies 0.2a / 100 * 20 = 0.04a = 4% of a [4/100 * a].
Alekya reddy said:
1 decade ago
If we take a = 20.
20%20 = 4.
Therefore b = 4.
Now 4%20 = 0.5.
20%a = b then b%20 is not equal to.
Can you please clarify?
20%20 = 4.
Therefore b = 4.
Now 4%20 = 0.5.
20%a = b then b%20 is not equal to.
Can you please clarify?
Manish said:
1 decade ago
20/100*a = b.
=> a/5 = b.
i.e. b = a/5.
No b% of 20 is b/100 *20.
= b/5.
Replacing b with a/5.
= a/25.
= 0.04 a.
= 4% of a.
=> a/5 = b.
i.e. b = a/5.
No b% of 20 is b/100 *20.
= b/5.
Replacing b with a/5.
= a/25.
= 0.04 a.
= 4% of a.
(1)
Anuj said:
1 decade ago
Let assume a =100,then 20% of a=b.
=20/100*100=> 20.
That means b=20.
Then b% of 20.
b/100*20.
It can also be written as (if we put the value of b).
20/100*20 =>4.
=20/100*100=> 20.
That means b=20.
Then b% of 20.
b/100*20.
It can also be written as (if we put the value of b).
20/100*20 =>4.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers