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 5 of 7.
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?
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.
Rajeev said:
1 decade ago
Actually I am unable to understand the explanation you have given. I think you are skipping some steps. Can anyone help me by giving proper answer with step by step.
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.
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%.
Mahesh said:
1 decade ago
In earlier sum, how
=(20/100)a * (1/100) * 20 comes,
because if we sub b=(20/100)a in I then that equ'n comes like
((20/100)a)/100*20 then how it comes (20/100)a * (1/100) * 20
=(20/100)a * (1/100) * 20 comes,
because if we sub b=(20/100)a in I then that equ'n comes like
((20/100)a)/100*20 then how it comes (20/100)a * (1/100) * 20
Cosmicguypradeep said:
1 decade ago
@habiha
here is the answer
% increase = (actual increase/original price *100)%
% decrease = (actual decrease/ original price *100)%
so, for this question we have to calculate % increase (since the pen was sold at higher rate 45, which was actually bought for 15 Rs)
(60-15/15 *100)% = 300%.
here is the answer
% increase = (actual increase/original price *100)%
% decrease = (actual decrease/ original price *100)%
so, for this question we have to calculate % increase (since the pen was sold at higher rate 45, which was actually bought for 15 Rs)
(60-15/15 *100)% = 300%.
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?
Leneri said:
8 years ago
If a=100 then 20% of a is b = 20.
20% of b =4.
( b% of 20 is the same as 20% of b).
4 out of 100 (4%).
20% of b =4.
( b% of 20 is the same as 20% of b).
4 out of 100 (4%).
Kowsigan said:
9 years ago
Fresh grapes contain 80% water by weight and when the grapes are died, raisins contain 25% by weight.
How many kgs of fresh grapes are needed to get 20kg of raisins?
Please someone explain to solve this.
How many kgs of fresh grapes are needed to get 20kg of raisins?
Please someone explain to solve this.
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