The table shows the number of markers sold at a bookshop last week.
| |
Number of markers sold |
| Per weekday |
6z |
| Saturday |
2z + 40 |
| Sunday |
3z - 7 |
- What was the total number of markers sold last week? Express your answer in terms of z the simplest form.
- If z = 28, how many markers were sold on Sunday?
(a)
Total markers sold on weekdays
= 5 x 6
z = 30
z Total markers sold on weekends
= 2
z + 40 + 3
z - 7
= 2
z + 3
z + 40 - 7
= 5
z + 33
Total markers sold last week
= 30
z + 5
z + 33
= 35
z + 33
(b)
Number of markers sold on Sunday
= (3 x 28) - 7
= 84 - 7
= 77
Answer(s): (a) 35
z + 33 or 33 + 35
z ; (b) 77
