The table shows the number of staplers sold at a bookshop last week.
|
Number of staplers sold |
Per weekday |
5r |
Saturday |
2r + 40 |
Sunday |
3r - 8 |
- What was the total number of staplers sold last week? Express your answer in terms of r the simplest form.
- If r = 30, how many staplers were sold on Sunday?
(a)
Total staplers sold on weekdays
= 5 x 5
r = 25
r Total staplers sold on weekends
= 2
r + 40 + 3
r - 8
= 2
r + 3
r + 40 - 8
= 5
r + 32
Total staplers sold last week
= 25
r + 5
r + 32
= 30
r + 32
(b)
Number of staplers sold on Sunday
= (3 x 30) - 8
= 90 - 8
= 82
Answer(s): (a) 30
r + 32 or 32 + 30
r ; (b) 82