In 2016, a group of p friends attended a movie together, and the tickets cost d dollars per person. By 2019, the cost of movie tickets had increased by 10% and the size of the group had increased by 5%. Find the percent increase in the total cost of the group attending a movie from 2016 to 2019.

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.