The table shows the number of pens sold at a bookshop last week.
| |
Number of pens sold |
| Per weekday |
6j |
| Saturday |
2j + 40 |
| Sunday |
3j - 10 |
- What was the total number of pens sold last week? Express your answer in terms of j the simplest form.
- If j = 25, how many pens were sold on Sunday?
(a)
Total pens sold on weekdays
= 5 x 6
j = 30
j Total pens sold on weekends
= 2
j + 40 + 3
j - 10
= 2
j + 3
j + 40 - 10
= 5
j + 30
Total pens sold last week
= 30
j + 5
j + 30
= 35
j + 30
(b)
Number of pens sold on Sunday
= (3 x 25) - 10
= 75 - 10
= 65
Answer(s): (a) 35
j + 30 or 30 + 35
j ; (b) 65
