One year, the population of a city was 392,000 . Several years later it was 427,280 . Find the percent increase. Answer: %

Calculate Population Increase: Calculate the actual increase in population. Population increase = New population - Original population = 427,280 - 392,000 = 35,280Calculate Percent Increase: Calculate the percent increase based on the original population. Percent increase = (Population increase / Original population) × 100% = (35,280 / 392,000) × 100%Perform Division and Multiplication: Perform the division and multiplication to find the percent increase. Percent increase = (35,280 / 392,000) × 100% = 0.09 × 100% = 9%

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Math Problems

Grade 8

Percent of change: word problems

Full solution

Q. One year, the population of a city was

392

000

. Several years later it was

427

280

\newline

Find the percent increase.

\newline

Answer: ________

\%

Calculate Population Increase: Calculate the actual increase in population. $\newline$ Population increase = New population - Original population $\newline$ = $427,280 - 392,000$ $\newline$ = $35,280$
Calculate Percent Increase: Calculate the percent increase based on the original population. Percent increase = $(\frac{\text{Population increase}}{\text{Original population}}) \times 100\%$ = $(\frac{35,280}{392,000}) \times 100\%$
Perform Division and Multiplication: Perform the division and multiplication to find the percent increase. $\newline$ Percent increase = $(35,280 / 392,000) \times 100\%$ $\newline$ = $0.09 \times 100\%$ $\newline$ = $9\%$