The table shows the number of markers sold at a bookshop last week.
|
Number of markers sold |
Per weekday |
5b |
Saturday |
2b + 40 |
Sunday |
3b - 7 |
- What was the total number of markers sold last week? Express your answer in terms of b the simplest form.
- If b = 21, how many markers were sold on Sunday?
(a)
Total markers sold on weekdays
= 5 x 5
b = 25
b Total markers sold on weekends
= 2
b + 40 + 3
b - 7
= 2
b + 3
b + 40 - 7
= 5
b + 33
Total markers sold last week
= 25
b + 5
b + 33
= 30
b + 33
(b)
Number of markers sold on Sunday
= (3 x 21) - 7
= 63 - 7
= 56
Answer(s): (a) 30
b + 33 or 33 + 30
b ; (b) 56