The table shows the number of pens sold at a bookshop last week.
|
Number of pens sold |
Per weekday |
6f |
Saturday |
3f + 40 |
Sunday |
3f - 10 |
- What was the total number of pens sold last week? Express your answer in terms of f the simplest form.
- If f = 23, how many pens were sold on Sunday?
(a)
Total pens sold on weekdays
= 5 x 6
f = 30
f Total pens sold on weekends
= 3
f + 40 + 3
f - 10
= 3
f + 3
f + 40 - 10
= 6
f + 30
Total pens sold last week
= 30
f + 6
f + 30
= 36
f + 30
(b)
Number of pens sold on Sunday
= (3 x 23) - 10
= 69 - 10
= 59
Answer(s): (a) 36
f + 30 or 30 + 36
f ; (b) 59