PSLEA shop sold three brands of pencils: Brand C, Brand D, and Brand E. The bar graph shows the number of pencils sold for each brand in one day.
- How many pencils were sold altogether?
- The shop collected $3366 from selling the pencils. The prices of Brand C, Brand D, and Brand E pencils were in the ratio 1 : 7 : 4. How much money was collected from selling Brand D pencils?
(a)
Number of Brand C pencils sold = 32
Number of Brand D pencils sold = 51
Number of Brand E pencils sold = 43
Total number of pencils sold
= 32 + 51 + 43
= 126
(b)
|
Brand C |
Brand D |
Brand E |
Number |
32 |
51 |
43 |
Price |
1 u |
7 u |
4 u |
Total value |
32 u |
357 u |
172 u |
Total amount of money collected
= 32 u + 357 u + 172 u
= 561 u
561 u = 3366
1 u = 3366 ÷ 561 = 6
Amount collected from selling Brand D pencils
= 357 u
= 357 x 6
= $2142
Answer(s): (a) 126; (b) $2142