The table shows the number of pens sold at a bookshop last week.
| |
Number of pens sold |
| Per weekday |
5z |
| Saturday |
2z + 40 |
| Sunday |
3z - 8 |
- What was the total number of pens sold last week? Express your answer in terms of z the simplest form.
- If z = 22, how many pens were sold on Sunday?
(a)
Total pens sold on weekdays
= 5 x 5
z = 25
z Total pens sold on weekends
= 2
z + 40 + 3
z - 8
= 2
z + 3
z + 40 - 8
= 5
z + 32
Total pens sold last week
= 25
z + 5
z + 32
= 30
z + 32
(b)
Number of pens sold on Sunday
= (3 x 22) - 8
= 66 - 8
= 58
Answer(s): (a) 30
z + 32 or 32 + 30
z ; (b) 58
