Question
Download Solution PDFThe population of a city at the end of 2020 increases by 50% from 2019 and by 40% at the end of 2021 from previous year. Then, the population in 2021 is what percent of the population at the end of 2019?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
Population increases by 50% from 2019 to 2020
Population increases by 40% from 2020 to 2021
Formula used:
Population growth = Base × (1 + % increase)
Required % = (Final value / Initial value) × 100
Calculations:
Let population at end of 2019 = 100
Population at end of 2020 = 100 × (1 + 50/100) = 100 × 1.5 = 150
Population at end of 2021 = 150 × (1 + 40/100) = 150 × 1.4 = 210
Required % = (210 / 100) × 100 = 210%
∴ The population in 2021 is 210% of the population at the end of 2019.
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