Question

Challenge: In the first week of July, a record 1,020 people went to the local swimming pool. In the second week, 110 fewer people went to the pool than in the first week. In the third week, 130 more people went to the pool than in the second week. In the fourth week, 173 fewer people went to the pool than in the third week. What is the percent decrease in the number of people who went to the pool over these four weeks? A) 7.54% B) 8.76% C) 9.82% D) 6.68%

Answer 1

To find the percent decrease, calculate the net change and express it as a percentage of the initial number of people.

Step-by-step explanation:

To find the percent decrease in the number of people who went to the pool over the four weeks, we need to calculate the net change in the number of people and then express it as a percentage of the initial number of people.

In the first week, 1,020 people went to the pool. In the second week, 110 fewer people went to the pool, so the number of people is 1,020 - 110 = 910. In the third week, 130 more people went to the pool than in the second week, so the number of people is 910 + 130 = 1,040. In the fourth week, 173 fewer people went to the pool than in the third week, so the number of people is 1,040 - 173 = 867.

The percent decrease is calculated as (initial number - final number) / initial number * 100%. In this case, the percent decrease is (1,020 - 867) / 1,020 * 100% = 15%. Therefore, the correct answer is NOT among the given options.

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