Question

In the first week of​ July, a record 1,060 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, 140 more people went to the pool than in the second week. In the fourth​ week,146 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?

Answer 1

Answer: 10%

Step-by-step explanation:

As per given ,

Initial number of people went to pool = 1060

After 4 weeks periods, number of people went to pool = 1060 - 100 +140 -146  ['+' for addition . '-' for decrease]

= 954

The percent decrease in the number of people who went to the pool over these four​ weeks = $\dfrac{1060-954}{1060}\times 100$

$=\dfrac{106}{1060}\times100\\\\=10\%$

Hence, the percent decrease in the number of people who went to the pool over these four​ weeks = 10%