The table shows the number of pens sold at a bookshop last week.
|
Number of pens sold |
Per weekday |
5f |
Saturday |
3f + 40 |
Sunday |
3f - 5 |
- 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 5
f = 25
f Total pens sold on weekends
= 3
f + 40 + 3
f - 5
= 3
f + 3
f + 40 - 5
= 6
f + 35
Total pens sold last week
= 25
f + 6
f + 35
= 31
f + 35
(b)
Number of pens sold on Sunday
= (3 x 23) - 5
= 69 - 5
= 64
Answer(s): (a) 31
f + 35 or 35 + 31
f ; (b) 64