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 3 of 7.
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%.
Qadir said:
6 years ago
20% of a = b --> Assume a as 100.
So, 20% of 100 = 20 By this we can say b=20.
Now, b% of 20 b=20% of 20=4 which is the answer.
So, 20% of 100 = 20 By this we can say b=20.
Now, b% of 20 b=20% of 20=4 which is the answer.
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)
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?
Ritesh said:
3 years ago
(5/3)X - P% of (5/3)X = (3/5)X.
After solving this equation for the value of P, we will be getting the percentage error.
After solving this equation for the value of P, we will be getting the percentage error.
(4)
Bharathi Prasath S said:
1 decade ago
((20/100*a=b) => a=5b).
b/100*20=> b/5-->(1) 4% of a = 4/100*5b = b/5---> (2).
(1) = (2).
So option A.
b/100*20=> b/5-->(1) 4% of a = 4/100*5b = b/5---> (2).
(1) = (2).
So option A.
Habiba said:
1 decade ago
A man bought a pen for #15 and later sold the pen for #60. What was the percent increase in the price of the pen?
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.
(149)
Kcs said:
1 decade ago
Take a=100
b=20%a=20%100=20/100*100=20
b=20
20%b=20/100*20=4
4%a=4%100=4
5%a=5%100=5
20%a=20%100=20
ans=4%.
b=20%a=20%100=20/100*100=20
b=20
20%b=20/100*20=4
4%a=4%100=4
5%a=5%100=5
20%a=20%100=20
ans=4%.
Raj said:
9 years ago
20% of a=b.
20 ÷ 100 of a = b.
a = 5b. b = a ÷ 5.
1 ÷ 25 of a = (1 ÷ 25) * 100 of a = 4%.
20 ÷ 100 of a = b.
a = 5b. b = a ÷ 5.
1 ÷ 25 of a = (1 ÷ 25) * 100 of a = 4%.
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