During her shopping trip, Gillian bought three different types of pencils, J, K and L in the ratio of 4 : 2 : 8. She decided to sell them at the prices listed as shown.
Pencil J : $1.20
Pencil K : $0.90
Pencil L : $0.40
Given that Gillian bought a total 504 pencils, how much did Gillian collect from the sale of all the pencils?
|
Pencil J |
Pencil K |
Pencil L |
Total |
Ratio of pencil |
4 u |
2 u |
8 u |
14 u |
Value of each pencil |
$1.20 |
$0.90 |
$0.40 |
|
14 u = 504
1 u = 504 ÷ 14 = 36
Number of Pencil J
= 4 x 36
= 144
Number of Pencil K
= 2 x 36
= 72
Number of Pencil L
= 8 x 36
= 288
Total revenue
= 144 x 1.20 + 72 x 0.90 + 288 x 0.40
= 172.80 + 64.80 + 115.20
= $352.80
Answer(s): $352.80