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.
Mathu said:
9 years ago
Why we can't use 262500. To divide the number 87500.
Keshav said:
9 years ago
@Aparna,
20% + 60% + 10% = 90%.
Means rest 10% = 30 rupee.
So obviously his salary will be 300 (100%).
20% + 60% + 10% = 90%.
Means rest 10% = 30 rupee.
So obviously his salary will be 300 (100%).
Aman said:
9 years ago
Population of town is increased by 5% annually. If its population in 2001 was 138915. What it was in 1998.
In this question what is the formula?
@Sunil I don't know where you derive your formula.
In this question what is the formula?
@Sunil I don't know where you derive your formula.
Angelo said:
9 years ago
What is the answer, if the population of the town is increased by 5% annually. If its population in 2001 was 138915. Then What was it in 1998?
Please anyone solve this.
Please anyone solve this.
Sreekanth said:
9 years ago
Anyone explain how 50/10?
Surya said:
9 years ago
Decade means?
Ann said:
9 years ago
I think the official answer is wrong : if you increase a population of 175,000 by 5% each year during 10 years it becomes more than 262,500.
Proof 175,000 * (1.05 ^ 10) = 285'056.56 that's more then 262,500!
So it should be less than 5%.
Right answer : ( (262,500/175,000) ^ 0.1) - 1 = 4.137974%.
So, A mus be the right choice.
Proof 175,000 * (1.05 ^ 10) = 285'056.56 that's more then 262,500!
So it should be less than 5%.
Right answer : ( (262,500/175,000) ^ 0.1) - 1 = 4.137974%.
So, A mus be the right choice.
(2)
Mohsin said:
9 years ago
10% is equal to 30.
While 100% is equal to?
Then,
30 * 100/10 = 300.
While 100% is equal to?
Then,
30 * 100/10 = 300.
Satwika said:
9 years ago
Why should we take 17,5000 in denominator why not 26,25000?
Shru said:
9 years ago
Guys it's very simple, here they used the formula for % change that is =difference in % ÷ initial value * 100.
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