Question: A snack company is tracking the sales of snacks at one grocery store to find out how well their products are selling. They want to look at a quarterly sales record to see which product sells well on its own and on which they might need to spend more advertising dollars.

During the first week, consumers purchase 117 boxes of each. The "Super Chewy Cookies" sold 119 boxes during the second week, 122 boxes during the third, and 124 during the fourth week. "Full of Chips Cookies" sold 121 during the second week, 119 during the third week, and 123 during the fourth week. 

Using this data, determine which is the top seller after one-quarter of the year.

Answer:  
To solve this problem, it may be helpful to organize the data.

Examine the data to find a pattern to complete the quarterly report. The Super Chewy Cookies followed a +2, +3 pattern. The Full of Chips Cookies followed a +4, -2 pattern. By continuing this pattern, the snack company can determine which should be a better seller.

According to this data, the best selling cookie is the Super Chewy Cookie.