Given,
population increases 3% in every year
original population = 450000
To find,
the population after 3 years and the value is needed to be rounded off to the nearest 100.
Solution,
We can simply solve this mathematical problem by using the following mathematical process.
Population after first year = 450000 + (450000 × 3/100) = 450000 + 13500 = 463500
Population after second year = 463500 + (463500 × 3/100) = 463500 + 13905 = 477405
Population after third year = 477405 + (477405 × 3/100) = 491727.15
Rounded off value = 491727.15 ≈ 491700
Hence, the final population is 491700
GIVEN
TO DETERMINE
The population after 3 years
CONCEPT TO BE IMPLEMENTED
If present population = P and the population increases at uniform rate of r % every year.
Then the population after n years
EVALUATION
Here it is given that
So by the given condition
Present population = P = 450000
Increment per year = r % = 3 %
Number of years = n = 3
Hence the required population after 3 years
= 491700 ( Rounding off to nearest 100 )
FINAL ANSWER
The population after 3 years = 491700
━━━━━━━━━━━━━━━━
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2. A vacuum cleaner cleans a floor area of 10 m2 every 4 minutes. How much floor area does it clean in half an hour
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Answers & Comments
Given,
population increases 3% in every year
original population = 450000
To find,
the population after 3 years and the value is needed to be rounded off to the nearest 100.
Solution,
We can simply solve this mathematical problem by using the following mathematical process.
Population after first year = 450000 + (450000 × 3/100) = 450000 + 13500 = 463500
Population after second year = 463500 + (463500 × 3/100) = 463500 + 13905 = 477405
Population after third year = 477405 + (477405 × 3/100) = 491727.15
Rounded off value = 491727.15 ≈ 491700
Hence, the final population is 491700
SOLUTION
GIVEN
TO DETERMINE
The population after 3 years
CONCEPT TO BE IMPLEMENTED
If present population = P and the population increases at uniform rate of r % every year.
Then the population after n years
EVALUATION
Here it is given that
So by the given condition
Present population = P = 450000
Increment per year = r % = 3 %
Number of years = n = 3
Hence the required population after 3 years
= 491700 ( Rounding off to nearest 100 )
FINAL ANSWER
The population after 3 years = 491700
━━━━━━━━━━━━━━━━
Learn more from Brainly :-
1. Amir expects a gain of 24% on his cost price. If in a week, his sale was of Rs. 620, what was his profit?
brainly.in/question/30278128
2. A vacuum cleaner cleans a floor area of 10 m2 every 4 minutes. How much floor area does it clean in half an hour
brainly.in/question/29368535