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:
97 comments Page 6 of 10.
Ann said:
10 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)
Surya said:
10 years ago
Decade means?
Sreekanth said:
10 years ago
Anyone explain how 50/10?
Angelo said:
10 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.
Aman said:
10 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.
Keshav said:
10 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%).
Mathu said:
10 years ago
Why we can't use 262500. To divide the number 87500.
Swathi said:
10 years ago
@Rajesh.
The question says to find out the Avg. Percent of increase per year. 17500 is the initial population which the place had hence you can't take the increased population, ie, 263500 because you Have to find the increase only. So 175000 is the denominator.
The question says to find out the Avg. Percent of increase per year. 17500 is the initial population which the place had hence you can't take the increased population, ie, 263500 because you Have to find the increase only. So 175000 is the denominator.
Rajesh said:
1 decade ago
Why 175000 is taken in the denominator instead of taking 2,62,500?
AgentSteel said:
1 decade ago
20 + 60 + 10 = 90%,
Rem 10% = 30,
Therefore, total salary = 300.
Rem 10% = 30,
Therefore, total salary = 300.
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