During her shopping trip, Gillian bought three different types of pens, C, D and E in the ratio of 4 : 2 : 8. She decided to sell them at the prices listed as shown.
Pen C : $2.10
Pen D : $0.90
Pen E : $0.40
Given that Gillian bought a total 504 pens, how much did Gillian collect from the sale of all the pens?
|
Pen C |
Pen D |
Pen E |
Total |
Ratio of pen |
4 u |
2 u |
8 u |
14 u |
Value of each pen |
$2.10 |
$0.90 |
$0.40 |
|
14 u = 504
1 u = 504 ÷ 14 = 36
Number of Pen C
= 4 x 36
= 144
Number of Pen D
= 2 x 36
= 72
Number of Pen E
= 8 x 36
= 288
Total revenue
= 144 x 2.10 + 72 x 0.90 + 288 x 0.40
= 302.40 + 64.80 + 115.20
= $482.40
Answer(s): $482.40