The table shows the number of notebooks sold at a bookshop last week.
|
Number of notebooks sold |
Per weekday |
5q |
Saturday |
2q + 40 |
Sunday |
3q - 9 |
- What was the total number of notebooks sold last week? Express your answer in terms of q the simplest form.
- If q = 20, how many notebooks were sold on Sunday?
(a)
Total notebooks sold on weekdays
= 5 x 5
q = 25
q Total notebooks sold on weekends
= 2
q + 40 + 3
q - 9
= 2
q + 3
q + 40 - 9
= 5
q + 31
Total notebooks sold last week
= 25
q + 5
q + 31
= 30
q + 31
(b)
Number of notebooks sold on Sunday
= (3 x 20) - 9
= 60 - 9
= 51
Answer(s): (a) 30
q + 31 or 31 + 30
q ; (b) 51