The table shows the number of pens sold at a bookshop last week.
|
Number of pens sold |
Per weekday |
6k |
Saturday |
4k + 40 |
Sunday |
3k - 10 |
- What was the total number of pens sold last week? Express your answer in terms of k the simplest form.
- If k = 28, how many pens were sold on Sunday?
(a)
Total pens sold on weekdays
= 5 x 6
k = 30
k Total pens sold on weekends
= 4
k + 40 + 3
k - 10
= 4
k + 3
k + 40 - 10
= 7
k + 30
Total pens sold last week
= 30
k + 7
k + 30
= 37
k + 30
(b)
Number of pens sold on Sunday
= (3 x 28) - 10
= 84 - 10
= 74
Answer(s): (a) 37
k + 30 or 30 + 37
k ; (b) 74