PSLEA shop sold three brands of notebooks: Brand K, Brand L, and Brand M. The bar graph shows the number of notebooks sold for each brand in one day.
- How many notebooks were sold altogether?
- The shop collected $1167 from selling the notebooks. The prices of Brand K, Brand L, and Brand M notebooks were in the ratio 2 : 4 : 1. How much money was collected from selling Brand L notebooks?
(a)
Number of Brand K notebooks sold = 51
Number of Brand L notebooks sold = 65
Number of Brand M notebooks sold = 27
Total number of notebooks sold
= 51 + 65 + 27
= 143
(b)
|
Brand K |
Brand L |
Brand M |
Number |
51 |
65 |
27 |
Price |
2 u |
4 u |
1 u |
Total value |
102 u |
260 u |
27 u |
Total amount of money collected
= 102 u + 260 u + 27 u
= 389 u
389 u = 1167
1 u = 1167 ÷ 389 = 3
Amount collected from selling Brand L notebooks
= 260 u
= 260 x 3
= $780
Answer(s): (a) 143; (b) $780