During her shopping trip, Zoe bought three different types of pencils, E, F and G in the ratio of 6 : 2 : 7. She decided to sell them at the prices listed as shown.
Pencil E : $1.40
Pencil F : $10
Pencil G : $0.40
Given that Zoe bought a total 510 pencils, how much did Zoe collect from the sale of all the pencils?
|
Pencil E |
Pencil F |
Pencil G |
Total |
Ratio of pencil |
6 u |
2 u |
7 u |
15 u |
Value of each pencil |
$1.40 |
$10 |
$0.40 |
|
15 u = 510
1 u = 510 ÷ 15 = 34
Number of Pencil E
= 6 x 34
= 204
Number of Pencil F
= 2 x 34
= 68
Number of Pencil G
= 7 x 34
= 238
Total revenue
= 204 x 1.40 + 68 x 10 + 238 x 0.40
= 285.60 + 680.00 + 95.20
= $1060.80
Answer(s): $1060.80