During her shopping trip, Hazel bought three different types of pencils, W, X and Y in the ratio of 5 : 2 : 9. She decided to sell them at the prices listed as shown.
Pencil W : $1.60
Pencil X : $0.90
Pencil Y : $0.40
Given that Hazel bought a total 528 pencils, how much did Hazel collect from the sale of all the pencils?
|
Pencil W |
Pencil X |
Pencil Y |
Total |
Ratio of pencil |
5 u |
2 u |
9 u |
16 u |
Value of each pencil |
$1.60 |
$0.90 |
$0.40 |
|
16 u = 528
1 u = 528 ÷ 16 = 33
Number of Pencil W
= 5 x 33
= 165
Number of Pencil X
= 2 x 33
= 66
Number of Pencil Y
= 9 x 33
= 297
Total revenue
= 165 x 1.60 + 66 x 0.90 + 297 x 0.40
= 264.00 + 59.40 + 118.80
= $442.20
Answer(s): $442.20