5,000 people visited a book fair in the first week. The number of visitors increased by 10% in the second week. How many people visited the book fair in the second week?
This task is appropriate for mental mathematics and students should be encouraged to think through the solution mentally. Students can easily find 10% of 5,000 and add 500 to 5000 arriving at the solution 5,500 people visited the book fair in the second week.
There was a 10% increase, so multiplying 5,000 by 1.1 (in other words, 100% + 10%) will yield the result of 5,500 people visited the book fair in the second week