The table shows the number of markers sold at a bookshop last week.
|
Number of markers sold |
Per weekday |
6i |
Saturday |
3i + 40 |
Sunday |
3i - 9 |
- What was the total number of markers sold last week? Express your answer in terms of i the simplest form.
- If i = 21, how many markers were sold on Sunday?
(a)
Total markers sold on weekdays
= 5 x 6
i = 30
i Total markers sold on weekends
= 3
i + 40 + 3
i - 9
= 3
i + 3
i + 40 - 9
= 6
i + 31
Total markers sold last week
= 30
i + 6
i + 31
= 36
i + 31
(b)
Number of markers sold on Sunday
= (3 x 21) - 9
= 63 - 9
= 54
Answer(s): (a) 36
i + 31 or 31 + 36
i ; (b) 54