Use the table given to answer questions (a) and (b).
- What was the total number of biscuits sold?
- Express your answer in terms of a in the simplest form. If a = 13, how many less biscuits were sold on Saturday than on Sunday?
Day | Number of biscuits sold |
Monday to Friday | 3a per day |
Saturday | a + 23 |
Sunday | 4a - 8 |