To begin, we know it already had 2,500 visitors. We need to multiply to find the number it increased by. 20% written as a decimal is 0.2 because you move the decimal point 2 times to the left. 2,500 multiplied by 0.2 is 500, so now we know how many MORE people visited the second week. To find the TOTAL amount of people who visited, we simply add them, getting our final answer of 3,000 people.