The table shows the number of notebooks sold at a bookshop last week.
| |
Number of notebooks sold |
| Per weekday |
5w |
| Saturday |
3w + 40 |
| Sunday |
3w - 9 |
- What was the total number of notebooks sold last week? Express your answer in terms of w the simplest form.
- If w = 27, how many notebooks were sold on Sunday?
(a)
Total notebooks sold on weekdays
= 5 x 5
w = 25
w Total notebooks sold on weekends
= 3
w + 40 + 3
w - 9
= 3
w + 3
w + 40 - 9
= 6
w + 31
Total notebooks sold last week
= 25
w + 6
w + 31
= 31
w + 31
(b)
Number of notebooks sold on Sunday
= (3 x 27) - 9
= 81 - 9
= 72
Answer(s): (a) 31
w + 31 or 31 + 31
w ; (b) 72
