Question

Suppose the population of a certain city is 4835 thousand. It is expected to decrease to 3936 thousand in 50 years. Find the percent decrease.

a) 18.6%
b) 19.6%
c) 20.6%
d) 21.6%

Answer 1

To find the percent decrease in the population of a certain city, subtract the new value from the original value, divide by the original value, and multiply by 100%. The decrease from 4835 thousand to 3936 thousand gives an 18.6% reduction.

Step-by-step explanation:

The question requires us to calculate the percent decrease of a city's population. Originally, the population is 4835 thousand and is expected to decrease to 3936 thousand in 50 years. The formula for percent decrease is: Percent Decrease = ((Original Value - New Value) / Original Value) x 100%.

Applying the values from the question, we get:

• Original Value = 4835 thousand
• New Value = 3936 thousand
• Percent Decrease = ((4835 - 3936) / 4835) x 100% = (899 / 4835) x 100%

Calculating the above expression:

Percent Decrease = 899/4835 x 100% = 18.6%

Therefore, the percent decrease in the population is 18.6%, which corresponds to option (a).