Naomi is doing a report about the 1900 and 1904 Olympic Games. Each page will contain information about 4 of the countries that competed each year. Write and solve an equation to find the number of pages Naomi will need.
A choir is made up of 6 vocal groups. Each group has an equal number of singers. There are 18 singers in the choir. Solve the equation 6p = 18 to find the number of singers in each group. Use a model.