The table shows the number of notebooks sold at a bookshop last week.
|
Number of notebooks sold |
Per weekday |
6i |
Saturday |
3i + 40 |
Sunday |
3i - 8 |
- What was the total number of notebooks sold last week? Express your answer in terms of i the simplest form.
- If i = 25, how many notebooks were sold on Sunday?
(a)
Total notebooks sold on weekdays
= 5 x 6
i = 30
i Total notebooks sold on weekends
= 3
i + 40 + 3
i - 8
= 3
i + 3
i + 40 - 8
= 6
i + 32
Total notebooks sold last week
= 30
i + 6
i + 32
= 36
i + 32
(b)
Number of notebooks sold on Sunday
= (3 x 25) - 8
= 75 - 8
= 67
Answer(s): (a) 36
i + 32 or 32 + 36
i ; (b) 67