The table shows the number of pens sold at a bookshop last week.
|
Number of pens sold |
Per weekday |
6c |
Saturday |
3c + 40 |
Sunday |
3c - 7 |
- What was the total number of pens sold last week? Express your answer in terms of c the simplest form.
- If c = 28, how many pens were sold on Sunday?
(a)
Total pens sold on weekdays
= 5 x 6
c = 30
c Total pens sold on weekends
= 3
c + 40 + 3
c - 7
= 3
c + 3
c + 40 - 7
= 6
c + 33
Total pens sold last week
= 30
c + 6
c + 33
= 36
c + 33
(b)
Number of pens sold on Sunday
= (3 x 28) - 7
= 84 - 7
= 77
Answer(s): (a) 36
c + 33 or 33 + 36
c ; (b) 77