The table shows the number of notebooks sold at a bookshop last week.
|
Number of notebooks sold |
Per weekday |
6r |
Saturday |
2r + 40 |
Sunday |
3r - 9 |
- What was the total number of notebooks sold last week? Express your answer in terms of r the simplest form.
- If r = 24, how many notebooks were sold on Sunday?
(a)
Total notebooks sold on weekdays
= 5 x 6
r = 30
r Total notebooks sold on weekends
= 2
r + 40 + 3
r - 9
= 2
r + 3
r + 40 - 9
= 5
r + 31
Total notebooks sold last week
= 30
r + 5
r + 31
= 35
r + 31
(b)
Number of notebooks sold on Sunday
= (3 x 24) - 9
= 72 - 9
= 63
Answer(s): (a) 35
r + 31 or 31 + 35
r ; (b) 63