The table shows the number of files sold at a bookshop last week.
| |
Number of files sold |
| Per weekday |
6n |
| Saturday |
3n + 40 |
| Sunday |
3n - 7 |
- What was the total number of files sold last week? Express your answer in terms of n the simplest form.
- If n = 26, how many files were sold on Sunday?
(a)
Total files sold on weekdays
= 5 x 6
n = 30
n Total files sold on weekends
= 3
n + 40 + 3
n - 7
= 3
n + 3
n + 40 - 7
= 6
n + 33
Total files sold last week
= 30
n + 6
n + 33
= 36
n + 33
(b)
Number of files sold on Sunday
= (3 x 26) - 7
= 78 - 7
= 71
Answer(s): (a) 36
n + 33 or 33 + 36
n ; (b) 71
