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 1 of 10.
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)
Priyanka said:
1 year ago
The population increased in 10 years 262500 - 175000 = 87500. For a decade that is for 10 years
Per year increase 87500/10= 8750.
Avg per cent increase in population per year= 8750/175000*100 = 5 per cent.
Per year increase 87500/10= 8750.
Avg per cent increase in population per year= 8750/175000*100 = 5 per cent.
(28)
T Muvetha said:
1 year ago
A decade means 10 years.
(13)
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)
Vikash Pal said:
2 years ago
It was mentioned increase was there in a decade means
we have a 50% increase in 10 years.
Now we were asked in 1 year =?
Simply unitary method
10 -> 50
1 -> ?
1*50/10 = 5%.
we have a 50% increase in 10 years.
Now we were asked in 1 year =?
Simply unitary method
10 -> 50
1 -> ?
1*50/10 = 5%.
(21)
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)
Naveen Kumar said:
3 years ago
100-(20+60+10) = 10%.
10% = 30 means 100% = 300.
10% = 30 means 100% = 300.
(2)
Sukumar Natarajan said:
3 years ago
Here, we have to use the formula P = (1+r/100) ^n.
So, the Answer is: 4.23%.
So, the Answer is: 4.23%.
(10)
Sanjana said:
3 years ago
Yes, you are right @Nayan.
@Karankumar. We need to find it per year and so 50/10 =5 hear we divide 50 by 10 because they have given the word "decade" in the question which means 10 years. I hope you have understood. Thank you.
@Karankumar. We need to find it per year and so 50/10 =5 hear we divide 50 by 10 because they have given the word "decade" in the question which means 10 years. I hope you have understood. Thank you.
(6)
Karunakar said:
4 years ago
How do you know for taking the 10 years? Please explain me.
(2)
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