PSLEA shop sold three brands of pens: Brand H, Brand J, and Brand K. The bar graph shows the number of pens sold for each brand in one day.
- How many pens were sold altogether?
- The shop collected $1170 from selling the pens. The prices of Brand H, Brand J, and Brand K pens were in the ratio 3 : 4 : 1. How much money was collected from selling Brand J pens?
(a)
Number of Brand H pens sold = 49
Number of Brand J pens sold = 51
Number of Brand K pens sold = 39
Total number of pens sold
= 49 + 51 + 39
= 139
(b)
|
Brand H |
Brand J |
Brand K |
Number |
49 |
51 |
39 |
Price |
3 u |
4 u |
1 u |
Total value |
147 u |
204 u |
39 u |
Total amount of money collected
= 147 u + 204 u + 39 u
= 390 u
390 u = 1170
1 u = 1170 ÷ 390 = 3
Amount collected from selling Brand J pens
= 204 u
= 204 x 3
= $612
Answer(s): (a) 139; (b) $612