PSLEA shop sold three brands of pens: Brand Q, Brand R, and Brand S. The bar graph shows the number of pens sold for each brand in one day.
- How many pens were sold altogether?
- The shop collected $2166 from selling the pens. The prices of Brand Q, Brand R, and Brand S pens were in the ratio 1 : 2 : 8. How much money was collected from selling Brand R pens?
(a)
Number of Brand Q pens sold = 65
Number of Brand R pens sold = 56
Number of Brand S pens sold = 23
Total number of pens sold
= 65 + 56 + 23
= 144
(b)
|
Brand Q |
Brand R |
Brand S |
Number |
65 |
56 |
23 |
Price |
1 u |
2 u |
8 u |
Total value |
65 u |
112 u |
184 u |
Total amount of money collected
= 65 u + 112 u + 184 u
= 361 u
361 u = 2166
1 u = 2166 ÷ 361 = 6
Amount collected from selling Brand R pens
= 112 u
= 112 x 6
= $672
Answer(s): (a) 144; (b) $672