The table shows the number of files sold at a bookshop last week.
|
Number of files sold |
Per weekday |
6i |
Saturday |
2i + 40 |
Sunday |
3i - 8 |
- What was the total number of files sold last week? Express your answer in terms of i the simplest form.
- If i = 21, how many files were sold on Sunday?
(a)
Total files sold on weekdays
= 5 x 6
i = 30
i Total files sold on weekends
= 2
i + 40 + 3
i - 8
= 2
i + 3
i + 40 - 8
= 5
i + 32
Total files sold last week
= 30
i + 5
i + 32
= 35
i + 32
(b)
Number of files sold on Sunday
= (3 x 21) - 8
= 63 - 8
= 55
Answer(s): (a) 35
i + 32 or 32 + 35
i ; (b) 55