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 9 of 10.
Nayana said:
5 years ago
Formula:
1 => Decrease = difference/high value*100.
2 => Increase = difference/low value *100.
Difference = 262500 - 175000 = 87500.
Lower value = 175000.
=> increase = 87500/175000 * 100 = 50
We need to find for per year so 50/10 = 5.
1 => Decrease = difference/high value*100.
2 => Increase = difference/low value *100.
Difference = 262500 - 175000 = 87500.
Lower value = 175000.
=> increase = 87500/175000 * 100 = 50
We need to find for per year so 50/10 = 5.
(31)
Ankan Mondal said:
4 years ago
Sir, I cannot understand. Anyone explain, please.
(4)
Muskan said:
4 years ago
Same here @Ankan Mondal.
Karunakar said:
4 years ago
How do you know for taking the 10 years? Please explain me.
(2)
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)
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)
Naveen Kumar said:
3 years ago
100-(20+60+10) = 10%.
10% = 30 means 100% = 300.
10% = 30 means 100% = 300.
(2)
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)
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)
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)
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