The table shows the number of files sold at a bookshop last week.
|
Number of files sold |
Per weekday |
5s |
Saturday |
4s + 40 |
Sunday |
3s - 10 |
- What was the total number of files sold last week? Express your answer in terms of s the simplest form.
- If s = 26, how many files were sold on Sunday?
(a)
Total files sold on weekdays
= 5 x 5
s = 25
s Total files sold on weekends
= 4
s + 40 + 3
s - 10
= 4
s + 3
s + 40 - 10
= 7
s + 30
Total files sold last week
= 25
s + 7
s + 30
= 32
s + 30
(b)
Number of files sold on Sunday
= (3 x 26) - 10
= 78 - 10
= 68
Answer(s): (a) 32
s + 30 or 30 + 32
s ; (b) 68