The table shows the number of staplers sold at a bookshop last week.
|
Number of staplers sold |
Per weekday |
6n |
Saturday |
3n + 40 |
Sunday |
3n - 9 |
- What was the total number of staplers sold last week? Express your answer in terms of n the simplest form.
- If n = 25, how many staplers were sold on Sunday?
(a)
Total staplers sold on weekdays
= 5 x 6
n = 30
n Total staplers sold on weekends
= 3
n + 40 + 3
n - 9
= 3
n + 3
n + 40 - 9
= 6
n + 31
Total staplers sold last week
= 30
n + 6
n + 31
= 36
n + 31
(b)
Number of staplers sold on Sunday
= (3 x 25) - 9
= 75 - 9
= 66
Answer(s): (a) 36
n + 31 or 31 + 36
n ; (b) 66