The table shows the number of staplers sold at a bookshop last week.
|
Number of staplers sold |
Per weekday |
5n |
Saturday |
4n + 40 |
Sunday |
3n - 7 |
- What was the total number of staplers sold last week? Express your answer in terms of n the simplest form.
- If n = 21, how many staplers were sold on Sunday?
(a)
Total staplers sold on weekdays
= 5 x 5
n = 25
n Total staplers sold on weekends
= 4
n + 40 + 3
n - 7
= 4
n + 3
n + 40 - 7
= 7
n + 33
Total staplers sold last week
= 25
n + 7
n + 33
= 32
n + 33
(b)
Number of staplers sold on Sunday
= (3 x 21) - 7
= 63 - 7
= 56
Answer(s): (a) 32
n + 33 or 33 + 32
n ; (b) 56