The table shows the number of pens sold at a bookshop last week.
| |
Number of pens sold |
| Per weekday |
5i |
| Saturday |
3i + 40 |
| Sunday |
3i - 5 |
- What was the total number of pens sold last week? Express your answer in terms of i the simplest form.
- If i = 23, how many pens were sold on Sunday?
(a)
Total pens sold on weekdays
= 5 x 5
i = 25
i Total pens sold on weekends
= 3
i + 40 + 3
i - 5
= 3
i + 3
i + 40 - 5
= 6
i + 35
Total pens sold last week
= 25
i + 6
i + 35
= 31
i + 35
(b)
Number of pens sold on Sunday
= (3 x 23) - 5
= 69 - 5
= 64
Answer(s): (a) 31
i + 35 or 35 + 31
i ; (b) 64
