The table shows the number of pens sold at a bookshop last week.
|
Number of pens sold |
Per weekday |
5t |
Saturday |
2t + 40 |
Sunday |
3t - 6 |
- What was the total number of pens sold last week? Express your answer in terms of t the simplest form.
- If t = 21, how many pens were sold on Sunday?
(a)
Total pens sold on weekdays
= 5 x 5
t = 25
t Total pens sold on weekends
= 2
t + 40 + 3
t - 6
= 2
t + 3
t + 40 - 6
= 5
t + 34
Total pens sold last week
= 25
t + 5
t + 34
= 30
t + 34
(b)
Number of pens sold on Sunday
= (3 x 21) - 6
= 63 - 6
= 57
Answer(s): (a) 30
t + 34 or 34 + 30
t ; (b) 57