Aptitude - Percentage - Discussion
Discussion Forum : Percentage - General Questions (Q.No. 15)
15.
The population of a town increased from 1,75,000 to 2,62,500 in a decade. The average percent increase of population per year is:
Answer: Option
Explanation:
Increase in 10 years = (262500 - 175000) = 87500.
| Increase% = |  |
87500 | x 100 |  % = 50%. |
| 175000 |
 Required average = |
|
50 | % = 5%. |
| 10 |
Discussion:
93 comments Page 5 of 10.
Ashok said:
9 years ago
@Manisha.
10% = 30rs(given).
Then,
20% = 60rs (30 * 2 = 60, 10 * 2 = 20%).
Similarly;
60% = 180rs,
10% = 30rs,
Add all gives 100% = 300rs.
10% = 30rs(given).
Then,
20% = 60rs (30 * 2 = 60, 10 * 2 = 20%).
Similarly;
60% = 180rs,
10% = 30rs,
Add all gives 100% = 300rs.
Venkatesh said:
5 years ago
Easy method:
Salary be x.
Total expenditure is 20%+60%+10% = 90%.
Remaining 10%,
10% of x = 30rs,
10x = 3000,
X = 300rs,
Salary is 300rs.
Salary be x.
Total expenditure is 20%+60%+10% = 90%.
Remaining 10%,
10% of x = 30rs,
10x = 3000,
X = 300rs,
Salary is 300rs.
Goku said:
5 years ago
@Aparna.
You are 100% wrong. Because you should take 60% of 100Rs, not 60% out of 80.
Take the % out of 100Rs, not out of remaining cost.
You are 100% wrong. Because you should take 60% of 100Rs, not 60% out of 80.
Take the % out of 100Rs, not out of remaining cost.
Anil said:
1 decade ago
Two numbers are respectively 25% and 20% more than of third. What percentage is the first of second. Could you solve this problem any one?
S A DEVIKA said:
2 years ago
We are taking 10 years since it has been mentioned in the question that there is an increase in a decade.
So, 1 decade = 10 years.
So, 1 decade = 10 years.
(7)
Ali said:
3 years ago
Why not directly the formula of compound interest for finding population after nth years is not used?
Anyone, please clarify it.
Anyone, please clarify it.
(15)
Siddhant said:
10 months ago
262500 = x% of 175000
i.e. 150% of 175000
Thus, a 50% increase from 100%.
50% increase in 10 years, so 5% increase per year.
i.e. 150% of 175000
Thus, a 50% increase from 100%.
50% increase in 10 years, so 5% increase per year.
(7)
Amreen said:
8 years ago
Percentage formula.
% = [final value-intial value/intial value] * 100.
% = 87500/17500 * 100.
= 5 is the ans hence proved.
% = [final value-intial value/intial value] * 100.
% = 87500/17500 * 100.
= 5 is the ans hence proved.
(1)
Ravi said:
1 decade ago
Population of town is increased by 5% annually. If its population in 2001 was 138915. What it was in 1998? reply soon.
Shiva said:
5 years ago
@Manisha.
20+60+10=90 so remaining is 10%. They said the remaining salary 30.
So 9*30=270.
Total salary=270+30=300.
20+60+10=90 so remaining is 10%. They said the remaining salary 30.
So 9*30=270.
Total salary=270+30=300.
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