Use the table given to answer questions (a) and (b).
- What was the total number of wafers sold?
- Express your answer in terms of j in the simplest form. If j = 25, how many less wafers were sold on Saturday than on Sunday?
Day | Number of wafers sold |
Monday to Friday | 6j per day |
Saturday | j + 27 |
Sunday | 4j - 7 |