Question

Challenge in the first week of July, a record 1,120 people went to the local swimming pool. In the second week, 100 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, 254 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?
The percent decrease of people who went to the pool is%
C

Answer 1

20%

Explanation:

You want to know the percentage change from 1120 to a final number that is 100 less, 130 more, and 254 less.

Percentage change

The percentage change is given by ...

percent change = change/(original amount) × 100%

Here, the total amount of change is the sum of the given changes:

-100 +130 -254 = -224

Then the percentage change is ...

-224/1120 × 100% = -20%

The percent decrease is 20%.

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