Solve. Round to the nearest tenth, if necessary.
-In the past ten years, the population of a city decreased from 100,000 to 85,000. Find the percent decrease.

Question

Quizplus · Accepted Answer

To find the percent decrease, you need to find the difference between the old value and the new value, divide that by the old value, and then multiply by 100.

So, the percent decrease is:

= ((100,000 - 85,000) / 100,000) x 100
= (15,000 / 100,000) x 100
= 15%

Therefore, the best choice is B, with an explanation as shown above. To find the percent decrease, we need to find the difference between the starting population and the final population, divide that by the starting population, and then multiply by 100.

Difference = 100,000 - 85,000 = 15,000
Percent decrease = (15,000/100,000) * 100 = 15%

Therefore, the answer is (B) 15%.

Solve. Round to the Nearest Tenth, If Necessary