Use the table given to answer questions (a) and (b).
- What was the total number of wafers sold?
- Express your answer in terms of w in the simplest form. If w = 30, how many less wafers were sold on Saturday than on Sunday?
Day | Number of wafers sold |
Monday to Friday | 3w per day |
Saturday | w + 27 |
Sunday | 4w - 5 |