PSLEA shop sold three brands of notebooks: Brand A, Brand B, and Brand C. The bar graph shows the number of notebooks sold for each brand in one day.
- How many notebooks were sold altogether?
- The shop collected $2800 from selling the notebooks. The prices of Brand A, Brand B, and Brand C notebooks were in the ratio 4 : 2 : 5. How much money was collected from selling Brand B notebooks?
(a)
Number of Brand A notebooks sold = 50
Number of Brand B notebooks sold = 30
Number of Brand C notebooks sold = 28
Total number of notebooks sold
= 50 + 30 + 28
= 108
(b)
|
Brand A |
Brand B |
Brand C |
Number |
50 |
30 |
28 |
Price |
4 u |
2 u |
5 u |
Total value |
200 u |
60 u |
140 u |
Total amount of money collected
= 200 u + 60 u + 140 u
= 400 u
400 u = 2800
1 u = 2800 ÷ 400 = 7
Amount collected from selling Brand B notebooks
= 60 u
= 60 x 7
= $420
Answer(s): (a) 108; (b) $420