The table shows the number of staplers sold at a bookshop last week.
| |
Number of staplers sold |
| Per weekday |
5j |
| Saturday |
2j + 40 |
| Sunday |
3j - 7 |
- What was the total number of staplers sold last week? Express your answer in terms of j the simplest form.
- If j = 30, how many staplers were sold on Sunday?
(a)
Total staplers sold on weekdays
= 5 x 5
j = 25
j Total staplers sold on weekends
= 2
j + 40 + 3
j - 7
= 2
j + 3
j + 40 - 7
= 5
j + 33
Total staplers sold last week
= 25
j + 5
j + 33
= 30
j + 33
(b)
Number of staplers sold on Sunday
= (3 x 30) - 7
= 90 - 7
= 83
Answer(s): (a) 30
j + 33 or 33 + 30
j ; (b) 83
