Civil Engineering - Water Supply Engineering - Discussion
Discussion Forum : Water Supply Engineering - Section 7 (Q.No. 5)
5.
The population of a city in 2000 is 50,000. The average increase in population over last 8 decades is 7500 and average incremental increase during 8 decades is 750. The population of the city based on incremental method, in the year 2020 will be
Discussion:
16 comments Page 2 of 2.
Grace said:
9 years ago
By incremental increase method, Pn = P + n (Average Increase+ Incremental Increase)
Given: P=50,000 ; n=2 ; Average Increase = 7500 ; Incremental Increase = 750,
Hence P2=50000+2(7500+750) = 66,500.
Given: P=50,000 ; n=2 ; Average Increase = 7500 ; Incremental Increase = 750,
Hence P2=50000+2(7500+750) = 66,500.
Ghosh said:
8 years ago
Yes 67250 is the right answer here.
Satish Verma said:
7 years ago
67250 is the right option.
Jignesh said:
7 years ago
@Jajhjiik.
Can you please explain how came 2 ad 3?
Can you please explain how came 2 ad 3?
Girma B. said:
7 years ago
The final answer is 67250.
Subhasmita patra said:
6 years ago
The formula for geometrical increase method is;
P(1+IG/100)^n.
P= population.
IG= average percentage per decade.
n= no of decad.
So, Pn=50000(1+20/100)^2.
= 72000.
P(1+IG/100)^n.
P= population.
IG= average percentage per decade.
n= no of decad.
So, Pn=50000(1+20/100)^2.
= 72000.
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