Use the table given to answer questions (a) and (b).
- What was the total number of puffs sold?
- Express your answer in terms of r in the simplest form. If r = 15, how many more puffs were sold on Sunday than on Saturday?
Day | Number of puffs sold |
Monday to Friday | 4r per day |
Saturday | r + 24 |
Sunday | 4r - 8 |