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Artemon [7]
3 years ago
14

In the first week of​ July, a record 1100 people went to the local swimming pool. In the second​ week, 125 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, 280 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?
Mathematics
1 answer:
Vladimir [108]3 years ago
6 0
In July:
First week:
Number of people went to the local swimming pool =1040
Second week:
110 fewer people went to the pool than in the first week
so,
Number of people went to the local swimming pool =1040-110
=930
Third week:
130 more people went to the pool than in the second week
so,
Number of people went to the local swimming pool =930+130
=1060
Fourth week:
228 fewer people went to the pool than in the third week
so,
Number of people went to the local swimming pool =1060-228
=832
Decrease in number of people over four week= number of people in first week - number of people in fourth week
Decrease in number of people over four week=1040-832
=208
now, we can find percentage
Percentage is

=20%.........Answer
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