The table shows the number of pens sold at a bookshop last week.
|
Number of pens sold |
Per weekday |
5c |
Saturday |
4c + 40 |
Sunday |
3c - 10 |
- What was the total number of pens sold last week? Express your answer in terms of c the simplest form.
- If c = 29, how many pens were sold on Sunday?
(a)
Total pens sold on weekdays
= 5 x 5
c = 25
c Total pens sold on weekends
= 4
c + 40 + 3
c - 10
= 4
c + 3
c + 40 - 10
= 7
c + 30
Total pens sold last week
= 25
c + 7
c + 30
= 32
c + 30
(b)
Number of pens sold on Sunday
= (3 x 29) - 10
= 87 - 10
= 77
Answer(s): (a) 32
c + 30 or 30 + 32
c ; (b) 77