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:
96 comments Page 4 of 10.
Nikhil dasari said:
9 years ago
We can also solve with options.
A) 4.37 % 175000 = 7647.5.
So decade means 10 year.
multiply 10*7647.5= 76475.
and add the multiply result with the 175000.
i.e)76475+175000 =2514755% 17500.
So it's not matching.
B) 5% 175000 = 8750.
so decade means 10 year.
multiply 10*8750= 87500.
and add the multiply result with the 175000.
i.e)87500+175000 = 262500.
Its right so answer is B.
A) 4.37 % 175000 = 7647.5.
So decade means 10 year.
multiply 10*7647.5= 76475.
and add the multiply result with the 175000.
i.e)76475+175000 =2514755% 17500.
So it's not matching.
B) 5% 175000 = 8750.
so decade means 10 year.
multiply 10*8750= 87500.
and add the multiply result with the 175000.
i.e)87500+175000 = 262500.
Its right so answer is B.
Satwika said:
9 years ago
Why should we take 17,5000 in denominator why not 26,25000?
Mr. bhatiya said:
9 years ago
Good @Shivani.
Anil said:
9 years ago
Why we divided 50 by 10?
Anil said:
9 years ago
Population in 2001 = 138915
Population in 1998 was = 138915 * 100/105 * 100/105 * 100/105 = 1,20,000.
Had it given the population in 1998 = 1,20,000 then what will be the population in 2001, if it increases @5% PA.
The solution would be = 1,20,000 * 105/100 * 105/100 * 105/100 = 138915 (population in 2001).
Population in 1998 was = 138915 * 100/105 * 100/105 * 100/105 = 1,20,000.
Had it given the population in 1998 = 1,20,000 then what will be the population in 2001, if it increases @5% PA.
The solution would be = 1,20,000 * 105/100 * 105/100 * 105/100 = 138915 (population in 2001).
Lopamudra said:
8 years ago
Suppose man's salary =100 Rs.
20%=20 Rs rent,
60% =60 Rs Expense,
10% =10 Rs LIc,
so left amount for education=100-(20+60+10)=10,
10% left ie 10 Rs of 100 %,
10%= 30(In qs),
1% =30/10,
100% =30*100/10=300(salary).
20%=20 Rs rent,
60% =60 Rs Expense,
10% =10 Rs LIc,
so left amount for education=100-(20+60+10)=10,
10% left ie 10 Rs of 100 %,
10%= 30(In qs),
1% =30/10,
100% =30*100/10=300(salary).
Saiswarupa said:
8 years ago
Thank you @Nikhil Dasari.
Nagesh N said:
8 years ago
Fresh fruit contains 68% water and dry fruit contains 20% water. How much can dry fruit be obtained from 100 kg of fresh fruits?
Please answer this.
Please answer this.
Suman Debnath said:
8 years ago
Increase in 10 years =(262500 - 175000) = 87500.
Increase % in 10 years = (175000 * x/100)%,
x= 50%.
In 1 year = (50/10)%.
Ans = 5.
Increase % in 10 years = (175000 * x/100)%,
x= 50%.
In 1 year = (50/10)%.
Ans = 5.
Rekha said:
7 years ago
But there was not mentioned exactly 10 years. Can you please explain how it came?
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