The table shows the number of files sold at a bookshop last week.
|
Number of files sold |
Per weekday |
6d |
Saturday |
3d + 40 |
Sunday |
3d - 5 |
- What was the total number of files sold last week? Express your answer in terms of d the simplest form.
- If d = 28, how many files were sold on Sunday?
(a)
Total files sold on weekdays
= 5 x 6
d = 30
d Total files sold on weekends
= 3
d + 40 + 3
d - 5
= 3
d + 3
d + 40 - 5
= 6
d + 35
Total files sold last week
= 30
d + 6
d + 35
= 36
d + 35
(b)
Number of files sold on Sunday
= (3 x 28) - 5
= 84 - 5
= 79
Answer(s): (a) 36
d + 35 or 35 + 36
d ; (b) 79