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 - 7 |
- What was the total number of pens sold last week? Express your answer in terms of t the simplest form.
- If t = 30, 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 - 7
= 2
t + 3
t + 40 - 7
= 5
t + 33
Total pens sold last week
= 25
t + 5
t + 33
= 30
t + 33
(b)
Number of pens sold on Sunday
= (3 x 30) - 7
= 90 - 7
= 83
Answer(s): (a) 30
t + 33 or 33 + 30
t ; (b) 83