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 6 of 10.
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.
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%).
Mathu said:
9 years ago
Why we can't use 262500. To divide the number 87500.
Swathi said:
9 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:
9 years ago
Why 175000 is taken in the denominator instead of taking 2,62,500?
AgentSteel said:
9 years ago
20 + 60 + 10 = 90%,
Rem 10% = 30,
Therefore, total salary = 300.
Rem 10% = 30,
Therefore, total salary = 300.
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.
Shivaranjitha said:
9 years ago
Maybe, if the 3rd no = 100.
Then 1st no is 25% more than that = 125.
In the same way 2nd no=120.
Now the question is 125 is What % of 120.
So it would be (125/120) *100.
Approximately equal to 104.
Then 1st no is 25% more than that = 125.
In the same way 2nd no=120.
Now the question is 125 is What % of 120.
So it would be (125/120) *100.
Approximately equal to 104.
Vikrala said:
10 years ago
There's a shortcut here i.e 100*r/100+r = 100*20/100+20.
You can easily get the result.
You can easily get the result.
SamuelAA said:
10 years ago
If a number is 20% more than the other, how much percent is less than the first?
Can somebody solve this please?
Can somebody solve this please?
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