During her shopping trip, Roshel bought three different types of pencils, E, F and G in the ratio of 6 : 2 : 9. She decided to sell them at the prices listed as shown.
Pencil E : $2.60
Pencil F : $0.80
Pencil G : $0.40
Given that Roshel bought a total 578 pencils, how much did Roshel collect from the sale of all the pencils?
|
Pencil E |
Pencil F |
Pencil G |
Total |
Ratio of pencil |
6 u |
2 u |
9 u |
17 u |
Value of each pencil |
$2.60 |
$0.80 |
$0.40 |
|
17 u = 578
1 u = 578 ÷ 17 = 34
Number of Pencil E
= 6 x 34
= 204
Number of Pencil F
= 2 x 34
= 68
Number of Pencil G
= 9 x 34
= 306
Total revenue
= 204 x 2.60 + 68 x 0.80 + 306 x 0.40
= 530.40 + 54.40 + 122.40
= $707.20
Answer(s): $707.20