The table shows the number of markers sold at a bookshop last week.
|
Number of markers sold |
Per weekday |
5j |
Saturday |
3j + 40 |
Sunday |
3j - 10 |
- What was the total number of markers sold last week? Express your answer in terms of j the simplest form.
- If j = 26, how many markers were sold on Sunday?
(a)
Total markers sold on weekdays
= 5 x 5
j = 25
j Total markers sold on weekends
= 3
j + 40 + 3
j - 10
= 3
j + 3
j + 40 - 10
= 6
j + 30
Total markers sold last week
= 25
j + 6
j + 30
= 31
j + 30
(b)
Number of markers sold on Sunday
= (3 x 26) - 10
= 78 - 10
= 68
Answer(s): (a) 31
j + 30 or 30 + 31
j ; (b) 68