The table shows the number of notebooks sold at a bookshop last week.
|
Number of notebooks sold |
Per weekday |
6a |
Saturday |
2a + 40 |
Sunday |
3a - 10 |
- What was the total number of notebooks sold last week? Express your answer in terms of a the simplest form.
- If a = 28, how many notebooks were sold on Sunday?
(a)
Total notebooks sold on weekdays
= 5 x 6
a = 30
a Total notebooks sold on weekends
= 2
a + 40 + 3
a - 10
= 2
a + 3
a + 40 - 10
= 5
a + 30
Total notebooks sold last week
= 30
a + 5
a + 30
= 35
a + 30
(b)
Number of notebooks sold on Sunday
= (3 x 28) - 10
= 84 - 10
= 74
Answer(s): (a) 35
a + 30 or 30 + 35
a ; (b) 74