The table shows the number of markers sold at a bookshop last week.
|
Number of markers sold |
Per weekday |
5n |
Saturday |
4n + 40 |
Sunday |
3n - 9 |
- What was the total number of markers sold last week? Express your answer in terms of n the simplest form.
- If n = 28, how many markers were sold on Sunday?
(a)
Total markers sold on weekdays
= 5 x 5
n = 25
n Total markers sold on weekends
= 4
n + 40 + 3
n - 9
= 4
n + 3
n + 40 - 9
= 7
n + 31
Total markers sold last week
= 25
n + 7
n + 31
= 32
n + 31
(b)
Number of markers sold on Sunday
= (3 x 28) - 9
= 84 - 9
= 75
Answer(s): (a) 32
n + 31 or 31 + 32
n ; (b) 75